./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_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_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 a45f8334b1b3999c3eda6569d09120923539f302 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 a45f8334b1b3999c3eda6569d09120923539f302 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:32:52,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:32:52,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:32:52,909 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:32:52,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:32:52,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:32:52,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:32:52,912 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:32:52,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:32:52,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:32:52,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:32:52,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:32:52,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:32:52,915 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:32:52,916 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:32:52,916 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:32:52,917 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:32:52,918 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:32:52,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:32:52,920 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:32:52,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:32:52,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:32:52,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:32:52,922 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:32:52,922 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:32:52,923 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:32:52,924 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:32:52,924 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:32:52,925 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:32:52,925 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:32:52,925 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:32:52,926 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:32:52,926 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:32:52,926 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:32:52,927 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:32:52,927 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:32:52,927 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 09:32:52,936 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:32:52,936 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:32:52,937 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:32:52,937 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:32:52,937 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:32:52,937 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:32:52,937 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:32:52,938 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:32:52,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:32:52,939 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:32:52,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:32:52,939 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:32:52,939 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:32:52,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:32:52,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:32:52,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:32:52,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:32:52,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 09:32:52,942 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_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 -> a45f8334b1b3999c3eda6569d09120923539f302 [2018-12-09 09:32:52,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:32:52,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:32:52,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:32:52,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:32:52,969 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:32:52,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_false-unreach-call.i [2018-12-09 09:32:53,004 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/2fc1fd7cb/8a791c45e4784c8d885137e47448d00b/FLAGfdcc8a39b [2018-12-09 09:32:53,516 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:32:53,516 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/sv-benchmarks/c/pthread/stack_false-unreach-call.i [2018-12-09 09:32:53,525 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/2fc1fd7cb/8a791c45e4784c8d885137e47448d00b/FLAGfdcc8a39b [2018-12-09 09:32:54,038 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/2fc1fd7cb/8a791c45e4784c8d885137e47448d00b [2018-12-09 09:32:54,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:32:54,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:32:54,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:32:54,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:32:54,044 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:32:54,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a29c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54, skipping insertion in model container [2018-12-09 09:32:54,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:32:54,077 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:32:54,324 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:32:54,333 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:32:54,359 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:32:54,414 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:32:54,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54 WrapperNode [2018-12-09 09:32:54,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:32:54,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:32:54,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:32:54,415 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:32:54,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:32:54,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:32:54,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:32:54,445 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:32:54,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... [2018-12-09 09:32:54,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:32:54,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:32:54,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:32:54,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:32:54,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:32:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 09:32:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 09:32:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 09:32:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 09:32:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:32:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:32:54,502 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:32:54,780 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:32:54,780 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 09:32:54,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:32:54 BoogieIcfgContainer [2018-12-09 09:32:54,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:32:54,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:32:54,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:32:54,783 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:32:54,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:32:54" (1/3) ... [2018-12-09 09:32:54,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1a24e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:32:54, skipping insertion in model container [2018-12-09 09:32:54,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:54" (2/3) ... [2018-12-09 09:32:54,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1a24e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:32:54, skipping insertion in model container [2018-12-09 09:32:54,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:32:54" (3/3) ... [2018-12-09 09:32:54,785 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_false-unreach-call.i [2018-12-09 09:32:54,810 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,811 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,812 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,813 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,814 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,815 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,816 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,817 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,818 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,818 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,818 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,818 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,818 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,819 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,820 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,821 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,822 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,823 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,824 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,825 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,826 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:54,836 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:32:54,837 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:32:54,843 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 09:32:54,852 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 09:32:54,869 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:32:54,869 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:32:54,869 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:32:54,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:32:54,870 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:32:54,870 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:32:54,870 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:32:54,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:32:54,878 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 133places, 141 transitions [2018-12-09 09:32:54,994 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6508 states. [2018-12-09 09:32:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6508 states. [2018-12-09 09:32:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 09:32:55,010 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:55,011 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 09:32:55,012 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:55,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1058864460, now seen corresponding path program 1 times [2018-12-09 09:32:55,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:32:55,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:55,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:32:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:55,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:55,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 09:32:55,169 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:32:55,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:32:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:32:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:32:55,183 INFO L87 Difference]: Start difference. First operand 6508 states. Second operand 3 states. [2018-12-09 09:32:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:55,282 INFO L93 Difference]: Finished difference Result 9856 states and 26355 transitions. [2018-12-09 09:32:55,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:32:55,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-12-09 09:32:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:55,340 INFO L225 Difference]: With dead ends: 9856 [2018-12-09 09:32:55,341 INFO L226 Difference]: Without dead ends: 9748 [2018-12-09 09:32:55,342 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 09:32:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9748 states. [2018-12-09 09:32:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9748 to 8278. [2018-12-09 09:32:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8278 states. [2018-12-09 09:32:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 22336 transitions. [2018-12-09 09:32:55,598 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 22336 transitions. Word has length 48 [2018-12-09 09:32:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:32:55,599 INFO L480 AbstractCegarLoop]: Abstraction has 8278 states and 22336 transitions. [2018-12-09 09:32:55,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:32:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 22336 transitions. [2018-12-09 09:32:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-09 09:32:55,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:55,602 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] [2018-12-09 09:32:55,603 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:55,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1994380150, now seen corresponding path program 1 times [2018-12-09 09:32:55,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:32:55,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:55,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,607 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:32:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:55,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:55,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 09:32:55,649 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:32:55,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:32:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:32:55,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:32:55,651 INFO L87 Difference]: Start difference. First operand 8278 states and 22336 transitions. Second operand 3 states. [2018-12-09 09:32:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:55,695 INFO L93 Difference]: Finished difference Result 7699 states and 20471 transitions. [2018-12-09 09:32:55,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:32:55,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-12-09 09:32:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:55,713 INFO L225 Difference]: With dead ends: 7699 [2018-12-09 09:32:55,713 INFO L226 Difference]: Without dead ends: 7558 [2018-12-09 09:32:55,714 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 09:32:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2018-12-09 09:32:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 7330. [2018-12-09 09:32:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7330 states. [2018-12-09 09:32:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7330 states to 7330 states and 19610 transitions. [2018-12-09 09:32:55,845 INFO L78 Accepts]: Start accepts. Automaton has 7330 states and 19610 transitions. Word has length 52 [2018-12-09 09:32:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:32:55,846 INFO L480 AbstractCegarLoop]: Abstraction has 7330 states and 19610 transitions. [2018-12-09 09:32:55,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:32:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7330 states and 19610 transitions. [2018-12-09 09:32:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 09:32:55,848 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:55,848 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] [2018-12-09 09:32:55,848 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:55,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash -614550933, now seen corresponding path program 1 times [2018-12-09 09:32:55,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:32:55,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:55,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:55,851 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:32:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:55,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:55,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:32:55,886 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:32:55,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:32:55,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:32:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:32:55,887 INFO L87 Difference]: Start difference. First operand 7330 states and 19610 transitions. Second operand 4 states. [2018-12-09 09:32:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:55,951 INFO L93 Difference]: Finished difference Result 10195 states and 27213 transitions. [2018-12-09 09:32:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:32:55,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-12-09 09:32:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:55,966 INFO L225 Difference]: With dead ends: 10195 [2018-12-09 09:32:55,966 INFO L226 Difference]: Without dead ends: 10195 [2018-12-09 09:32:55,967 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 09:32:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10195 states. [2018-12-09 09:32:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10195 to 7654. [2018-12-09 09:32:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7654 states. [2018-12-09 09:32:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7654 states to 7654 states and 20477 transitions. [2018-12-09 09:32:56,081 INFO L78 Accepts]: Start accepts. Automaton has 7654 states and 20477 transitions. Word has length 57 [2018-12-09 09:32:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:32:56,081 INFO L480 AbstractCegarLoop]: Abstraction has 7654 states and 20477 transitions. [2018-12-09 09:32:56,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:32:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7654 states and 20477 transitions. [2018-12-09 09:32:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-09 09:32:56,085 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:56,085 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] [2018-12-09 09:32:56,085 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:56,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1676648747, now seen corresponding path program 1 times [2018-12-09 09:32:56,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:32:56,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:56,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:56,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:32:56,087 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:32:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:56,150 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 09:32:56,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:32:56,150 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 09:32:56,152 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 09:32:56,154 INFO L168 Benchmark]: Toolchain (without parser) took 2113.81 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 276.3 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -72.9 MB). Peak memory consumption was 203.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:32:56,156 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:32:56,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:32:56,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:32:56,157 INFO L168 Benchmark]: Boogie Preprocessor took 17.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:32:56,157 INFO L168 Benchmark]: RCFGBuilder took 317.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:32:56,158 INFO L168 Benchmark]: TraceAbstraction took 1373.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 143.7 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 18.6 MB). Peak memory consumption was 162.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:32:56,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 317.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1373.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 143.7 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 18.6 MB). Peak memory consumption was 162.2 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 09:32:57,571 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:32:57,572 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:32:57,578 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:32:57,578 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:32:57,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:32:57,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:32:57,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:32:57,581 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:32:57,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:32:57,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:32:57,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:32:57,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:32:57,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:32:57,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:32:57,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:32:57,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:32:57,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:32:57,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:32:57,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:32:57,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:32:57,587 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:32:57,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:32:57,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:32:57,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:32:57,589 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:32:57,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:32:57,590 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:32:57,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:32:57,590 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:32:57,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:32:57,591 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:32:57,591 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:32:57,591 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:32:57,592 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:32:57,592 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:32:57,592 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 09:32:57,599 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:32:57,599 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:32:57,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:32:57,600 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:32:57,600 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:32:57,601 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 09:32:57,601 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:32:57,602 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:32:57,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:32:57,602 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 09:32:57,603 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:32:57,603 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 09:32:57,603 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 09:32:57,603 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_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 -> a45f8334b1b3999c3eda6569d09120923539f302 [2018-12-09 09:32:57,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:32:57,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:32:57,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:32:57,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:32:57,632 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:32:57,632 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_false-unreach-call.i [2018-12-09 09:32:57,669 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/a8f03a6f1/2893d40449ba46ef8fd4be8a0b47e448/FLAG4487d7448 [2018-12-09 09:32:58,103 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:32:58,104 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/sv-benchmarks/c/pthread/stack_false-unreach-call.i [2018-12-09 09:32:58,111 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/a8f03a6f1/2893d40449ba46ef8fd4be8a0b47e448/FLAG4487d7448 [2018-12-09 09:32:58,119 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/data/a8f03a6f1/2893d40449ba46ef8fd4be8a0b47e448 [2018-12-09 09:32:58,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:32:58,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:32:58,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:32:58,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:32:58,125 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:32:58,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,127 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 09:32:58, skipping insertion in model container [2018-12-09 09:32:58,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:32:58,155 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:32:58,380 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:32:58,392 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:32:58,462 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:32:58,543 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:32:58,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58 WrapperNode [2018-12-09 09:32:58,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:32:58,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:32:58,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:32:58,544 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:32:58,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:32:58,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:32:58,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:32:58,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:32:58,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... [2018-12-09 09:32:58,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:32:58,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:32:58,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:32:58,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:32:58,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 09:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 09:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 09:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 09:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 09:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 09:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-09 09:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 09:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:32:58,643 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:32:58,884 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:32:58,884 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 09:32:58,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:32:58 BoogieIcfgContainer [2018-12-09 09:32:58,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:32:58,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:32:58,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:32:58,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:32:58,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:32:58" (1/3) ... [2018-12-09 09:32:58,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3091f5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:32:58, skipping insertion in model container [2018-12-09 09:32:58,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:32:58" (2/3) ... [2018-12-09 09:32:58,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3091f5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:32:58, skipping insertion in model container [2018-12-09 09:32:58,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:32:58" (3/3) ... [2018-12-09 09:32:58,889 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_false-unreach-call.i [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,912 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,913 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,914 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,915 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,916 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,917 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,918 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,919 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,920 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,921 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,922 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,923 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,924 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,925 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:32:58,937 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:32:58,937 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:32:58,944 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 09:32:58,956 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 09:32:58,973 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:32:58,974 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:32:58,974 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:32:58,974 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:32:58,974 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:32:58,974 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:32:58,974 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:32:58,974 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:32:58,974 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:32:58,981 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 128places, 136 transitions [2018-12-09 09:32:59,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5833 states. [2018-12-09 09:32:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states. [2018-12-09 09:32:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-09 09:32:59,121 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:59,121 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:32:59,123 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:59,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash 962038274, now seen corresponding path program 1 times [2018-12-09 09:32:59,130 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:32:59,130 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:32:59,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:59,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:32:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:59,230 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:32:59,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:59,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 09:32:59,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:32:59,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:32:59,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:32:59,247 INFO L87 Difference]: Start difference. First operand 5833 states. Second operand 3 states. [2018-12-09 09:32:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:59,338 INFO L93 Difference]: Finished difference Result 8896 states and 23790 transitions. [2018-12-09 09:32:59,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:32:59,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-09 09:32:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:59,372 INFO L225 Difference]: With dead ends: 8896 [2018-12-09 09:32:59,372 INFO L226 Difference]: Without dead ends: 8788 [2018-12-09 09:32:59,373 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 09:32:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2018-12-09 09:32:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 7507. [2018-12-09 09:32:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7507 states. [2018-12-09 09:32:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 20267 transitions. [2018-12-09 09:32:59,557 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 20267 transitions. Word has length 47 [2018-12-09 09:32:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:32:59,558 INFO L480 AbstractCegarLoop]: Abstraction has 7507 states and 20267 transitions. [2018-12-09 09:32:59,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:32:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 20267 transitions. [2018-12-09 09:32:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 09:32:59,561 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:59,561 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] [2018-12-09 09:32:59,561 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:59,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash -603610721, now seen corresponding path program 1 times [2018-12-09 09:32:59,562 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:32:59,562 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:32:59,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:59,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:32:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:59,612 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:32:59,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:59,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 09:32:59,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:32:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:32:59,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:32:59,616 INFO L87 Difference]: Start difference. First operand 7507 states and 20267 transitions. Second operand 3 states. [2018-12-09 09:32:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:59,664 INFO L93 Difference]: Finished difference Result 7612 states and 20264 transitions. [2018-12-09 09:32:59,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:32:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-12-09 09:32:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:59,682 INFO L225 Difference]: With dead ends: 7612 [2018-12-09 09:32:59,682 INFO L226 Difference]: Without dead ends: 7471 [2018-12-09 09:32:59,683 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 09:32:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2018-12-09 09:32:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7051. [2018-12-09 09:32:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7051 states. [2018-12-09 09:32:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 18923 transitions. [2018-12-09 09:32:59,812 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 18923 transitions. Word has length 50 [2018-12-09 09:32:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:32:59,813 INFO L480 AbstractCegarLoop]: Abstraction has 7051 states and 18923 transitions. [2018-12-09 09:32:59,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:32:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 18923 transitions. [2018-12-09 09:32:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-09 09:32:59,815 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:32:59,815 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] [2018-12-09 09:32:59,816 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:32:59,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:32:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1262178542, now seen corresponding path program 1 times [2018-12-09 09:32:59,816 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:32:59,816 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:32:59,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:32:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:32:59,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:32:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:32:59,893 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:32:59,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:32:59,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:32:59,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 09:32:59,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 09:32:59,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:32:59,895 INFO L87 Difference]: Start difference. First operand 7051 states and 18923 transitions. Second operand 4 states. [2018-12-09 09:32:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:32:59,974 INFO L93 Difference]: Finished difference Result 10048 states and 26927 transitions. [2018-12-09 09:32:59,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 09:32:59,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-12-09 09:32:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:32:59,996 INFO L225 Difference]: With dead ends: 10048 [2018-12-09 09:32:59,996 INFO L226 Difference]: Without dead ends: 10048 [2018-12-09 09:32:59,996 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 09:33:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10048 states. [2018-12-09 09:33:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10048 to 7333. [2018-12-09 09:33:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7333 states. [2018-12-09 09:33:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 19691 transitions. [2018-12-09 09:33:00,112 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 19691 transitions. Word has length 55 [2018-12-09 09:33:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:00,112 INFO L480 AbstractCegarLoop]: Abstraction has 7333 states and 19691 transitions. [2018-12-09 09:33:00,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 09:33:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 19691 transitions. [2018-12-09 09:33:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-12-09 09:33:00,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:00,116 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] [2018-12-09 09:33:00,117 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:00,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash -196820926, now seen corresponding path program 1 times [2018-12-09 09:33:00,117 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:00,117 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:33:00,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:00,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:00,207 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 09:33:00,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:33:00,252 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 09:33:00,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:33:00,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:00,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:00,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:00,297 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 09:33:00,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:33:00,306 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 09:33:00,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:33:00,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2018-12-09 09:33:00,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 09:33:00,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 09:33:00,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:33:00,332 INFO L87 Difference]: Start difference. First operand 7333 states and 19691 transitions. Second operand 8 states. [2018-12-09 09:33:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:33:00,583 INFO L93 Difference]: Finished difference Result 22579 states and 60751 transitions. [2018-12-09 09:33:00,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 09:33:00,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2018-12-09 09:33:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:33:00,630 INFO L225 Difference]: With dead ends: 22579 [2018-12-09 09:33:00,630 INFO L226 Difference]: Without dead ends: 22579 [2018-12-09 09:33:00,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-09 09:33:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22579 states. [2018-12-09 09:33:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22579 to 18217. [2018-12-09 09:33:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18217 states. [2018-12-09 09:33:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18217 states to 18217 states and 49686 transitions. [2018-12-09 09:33:00,949 INFO L78 Accepts]: Start accepts. Automaton has 18217 states and 49686 transitions. Word has length 77 [2018-12-09 09:33:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:00,949 INFO L480 AbstractCegarLoop]: Abstraction has 18217 states and 49686 transitions. [2018-12-09 09:33:00,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 09:33:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18217 states and 49686 transitions. [2018-12-09 09:33:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-09 09:33:00,954 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:00,954 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] [2018-12-09 09:33:00,954 INFO L423 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:00,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1913703859, now seen corresponding path program 1 times [2018-12-09 09:33:00,955 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:00,955 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:00,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:01,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:33:01,041 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:33:01,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:33:01,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 09:33:01,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 09:33:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 09:33:01,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:33:01,044 INFO L87 Difference]: Start difference. First operand 18217 states and 49686 transitions. Second operand 7 states. [2018-12-09 09:33:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:33:01,228 INFO L93 Difference]: Finished difference Result 21094 states and 57261 transitions. [2018-12-09 09:33:01,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 09:33:01,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2018-12-09 09:33:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:33:01,258 INFO L225 Difference]: With dead ends: 21094 [2018-12-09 09:33:01,258 INFO L226 Difference]: Without dead ends: 21094 [2018-12-09 09:33:01,258 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 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 09:33:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states. [2018-12-09 09:33:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 18964. [2018-12-09 09:33:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18964 states. [2018-12-09 09:33:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18964 states to 18964 states and 51561 transitions. [2018-12-09 09:33:01,484 INFO L78 Accepts]: Start accepts. Automaton has 18964 states and 51561 transitions. Word has length 80 [2018-12-09 09:33:01,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:01,484 INFO L480 AbstractCegarLoop]: Abstraction has 18964 states and 51561 transitions. [2018-12-09 09:33:01,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 09:33:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18964 states and 51561 transitions. [2018-12-09 09:33:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-12-09 09:33:01,488 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:01,488 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] [2018-12-09 09:33:01,488 INFO L423 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:01,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:01,489 INFO L82 PathProgramCache]: Analyzing trace with hash 90651981, now seen corresponding path program 1 times [2018-12-09 09:33:01,489 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:01,489 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:01,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:01,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:01,602 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 09:33:01,604 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 09:33:01,604 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:33:01,606 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:01,608 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:01,608 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-12-09 09:33:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:33:01,618 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:33:01,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:33:01,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 09:33:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:33:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:33:01,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:33:01,621 INFO L87 Difference]: Start difference. First operand 18964 states and 51561 transitions. Second operand 3 states. [2018-12-09 09:33:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:33:01,658 INFO L93 Difference]: Finished difference Result 9163 states and 23578 transitions. [2018-12-09 09:33:01,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:33:01,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2018-12-09 09:33:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:33:01,670 INFO L225 Difference]: With dead ends: 9163 [2018-12-09 09:33:01,670 INFO L226 Difference]: Without dead ends: 9163 [2018-12-09 09:33:01,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 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 09:33:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2018-12-09 09:33:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 7522. [2018-12-09 09:33:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7522 states. [2018-12-09 09:33:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7522 states to 7522 states and 19218 transitions. [2018-12-09 09:33:01,760 INFO L78 Accepts]: Start accepts. Automaton has 7522 states and 19218 transitions. Word has length 89 [2018-12-09 09:33:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:01,760 INFO L480 AbstractCegarLoop]: Abstraction has 7522 states and 19218 transitions. [2018-12-09 09:33:01,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:33:01,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7522 states and 19218 transitions. [2018-12-09 09:33:01,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-12-09 09:33:01,764 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:01,764 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] [2018-12-09 09:33:01,764 INFO L423 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:01,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1656350143, now seen corresponding path program 1 times [2018-12-09 09:33:01,764 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:01,765 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:01,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:01,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:02,025 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 09:33:02,028 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 09:33:02,029 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,032 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,047 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,048 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 09:33:02,374 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 09:33:02,376 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 09:33:02,377 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 09:33:02,380 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 09:33:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:33:02,516 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:33:02,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:33:02,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-12-09 09:33:02,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 09:33:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 09:33:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-12-09 09:33:02,518 INFO L87 Difference]: Start difference. First operand 7522 states and 19218 transitions. Second operand 22 states. [2018-12-09 09:33:07,125 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 09:33:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:33:07,896 INFO L93 Difference]: Finished difference Result 16705 states and 42639 transitions. [2018-12-09 09:33:07,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-09 09:33:07,896 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 90 [2018-12-09 09:33:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:33:07,910 INFO L225 Difference]: With dead ends: 16705 [2018-12-09 09:33:07,910 INFO L226 Difference]: Without dead ends: 16705 [2018-12-09 09:33:07,911 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=442, Invalid=2314, Unknown=0, NotChecked=0, Total=2756 [2018-12-09 09:33:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16705 states. [2018-12-09 09:33:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16705 to 9319. [2018-12-09 09:33:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9319 states. [2018-12-09 09:33:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 24010 transitions. [2018-12-09 09:33:08,044 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 24010 transitions. Word has length 90 [2018-12-09 09:33:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:08,045 INFO L480 AbstractCegarLoop]: Abstraction has 9319 states and 24010 transitions. [2018-12-09 09:33:08,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 09:33:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 24010 transitions. [2018-12-09 09:33:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-12-09 09:33:08,050 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:08,050 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, 1, 1] [2018-12-09 09:33:08,050 INFO L423 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:08,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:08,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1961443801, now seen corresponding path program 1 times [2018-12-09 09:33:08,051 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:08,051 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:08,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:08,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:08,135 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 09:33:08,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:33:08,211 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 09:33:08,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:33:08,213 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:08,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:33:08,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:33:08,260 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 09:33:08,260 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:33:08,279 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 09:33:08,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:33:08,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2018-12-09 09:33:08,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 09:33:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 09:33:08,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-12-09 09:33:08,296 INFO L87 Difference]: Start difference. First operand 9319 states and 24010 transitions. Second operand 16 states. [2018-12-09 09:33:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:33:08,710 INFO L93 Difference]: Finished difference Result 16153 states and 41010 transitions. [2018-12-09 09:33:08,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-09 09:33:08,711 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 111 [2018-12-09 09:33:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:33:08,723 INFO L225 Difference]: With dead ends: 16153 [2018-12-09 09:33:08,724 INFO L226 Difference]: Without dead ends: 16153 [2018-12-09 09:33:08,724 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 426 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 09:33:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16153 states. [2018-12-09 09:33:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16153 to 11974. [2018-12-09 09:33:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11974 states. [2018-12-09 09:33:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11974 states to 11974 states and 30987 transitions. [2018-12-09 09:33:08,842 INFO L78 Accepts]: Start accepts. Automaton has 11974 states and 30987 transitions. Word has length 111 [2018-12-09 09:33:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:33:08,842 INFO L480 AbstractCegarLoop]: Abstraction has 11974 states and 30987 transitions. [2018-12-09 09:33:08,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 09:33:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 11974 states and 30987 transitions. [2018-12-09 09:33:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-12-09 09:33:08,847 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:33:08,847 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, 1, 1] [2018-12-09 09:33:08,847 INFO L423 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:33:08,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:33:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2147354029, now seen corresponding path program 1 times [2018-12-09 09:33:08,848 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:33:08,848 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/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 09:33:08,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:33:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:33:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:33:09,319 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 09:33:09,389 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 09:33:09,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:33:09 BasicIcfg [2018-12-09 09:33:09,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:33:09,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:33:09,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:33:09,390 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:33:09,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:32:58" (3/4) ... [2018-12-09 09:33:09,392 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 09:33:09,455 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0cf20bfe-42a8-42c6-9549-0e0cda44e713/bin-2019/utaipan/witness.graphml [2018-12-09 09:33:09,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:33:09,456 INFO L168 Benchmark]: Toolchain (without parser) took 11334.13 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 524.8 MB). Free memory was 939.3 MB in the beginning and 868.5 MB in the end (delta: 70.9 MB). Peak memory consumption was 595.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:33:09,456 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:33:09,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:33:09,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:33:09,457 INFO L168 Benchmark]: Boogie Preprocessor took 26.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:33:09,457 INFO L168 Benchmark]: RCFGBuilder took 277.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:33:09,457 INFO L168 Benchmark]: TraceAbstraction took 10504.33 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 379.1 MB). Free memory was 1.1 GB in the beginning and 894.7 MB in the end (delta: 157.0 MB). Peak memory consumption was 536.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:33:09,457 INFO L168 Benchmark]: Witness Printer took 65.34 ms. Allocated memory is still 1.6 GB. Free memory was 894.7 MB in the beginning and 868.5 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-12-09 09:33:09,459 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 420.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 277.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10504.33 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 379.1 MB). Free memory was 1.1 GB in the beginning and 894.7 MB in the end (delta: 157.0 MB). Peak memory consumption was 536.0 MB. Max. memory is 11.5 GB. * Witness Printer took 65.34 ms. Allocated memory is still 1.6 GB. Free memory was 894.7 MB in the beginning and 868.5 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1860]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1853] -1 static int top=0; VAL [top=0] [L1854] -1 static unsigned int arr[(5)]; VAL [arr={3:0}, top=0] [L1855] -1 pthread_mutex_t m; VAL [arr={3:0}, m={2:0}, top=0] [L1856] -1 _Bool flag=(0); VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1952] -1 pthread_t id1, id2; VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1956] FCALL, FORK -1 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1916] 0 int i; VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1917] 0 unsigned int tmp; VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1919] 0 i=0 VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1919] COND TRUE 0 i<(5) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1922] 0 tmp = __VERIFIER_nondet_uint() VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1957] FCALL, FORK -1 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1934] 1 int i; VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1936] 1 i=0 VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1936] COND TRUE 1 i<(5) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1886] COND FALSE 0 !(top==(5)) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1876] 0 return top; VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1893] 0 stack[get_top()] = x VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L1866] 0 top++ VAL [arr={3:0}, flag=0, m={2:0}, top=1] [L1896] 0 return 0; VAL [arr={3:0}, flag=0, m={2:0}, top=1] [L1924] COND FALSE 0 !(push(arr,tmp)==(-1)) VAL [arr={3:0}, flag=0, m={2:0}, top=1] [L1926] 0 flag=(1) VAL [arr={3:0}, flag=1, m={2:0}, top=1] [L1939] COND TRUE 1 \read(flag) VAL [arr={3:0}, flag=1, m={2:0}, top=1] [L1876] 1 return top; VAL [arr={3:0}, flag=1, m={2:0}, top=1] [L1901] COND FALSE 1 !(get_top()==0) VAL [arr={3:0}, flag=1, m={2:0}, top=1] [L1871] 1 top-- VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1876] 1 return top; VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1909] EXPR 1 stack[get_top()] VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1909] 1 return stack[get_top()]; VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1941] COND FALSE 1 !(!(pop(arr)!=(-2))) VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1936] 1 i++ VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1936] COND TRUE 1 i<(5) VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1939] COND TRUE 1 \read(flag) VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1876] 1 return top; VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1901] COND TRUE 1 get_top()==0 VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1904] 1 return (-2); VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1941] COND TRUE 1 !(pop(arr)!=(-2)) VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L1860] 1 __VERIFIER_error() VAL [arr={3:0}, flag=1, m={2:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 213 locations, 4 error locations. UNSAFE Result, 10.4s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 6.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1913 SDtfs, 3169 SDslu, 11631 SDs, 0 SdLazy, 2404 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1213 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18964occurred 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: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 24114 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 899 NumberOfCodeBlocks, 899 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1149 ConstructedInterpolants, 0 QuantifiedInterpolants, 422481 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1193 ConjunctsInSsa, 65 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...