./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-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_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 c0c6f9396ac757d71a8b83c6063958dd7f87da5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 c0c6f9396ac757d71a8b83c6063958dd7f87da5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:09:11,784 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:09:11,786 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:09:11,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:09:11,793 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:09:11,794 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:09:11,795 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:09:11,796 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:09:11,797 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:09:11,797 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:09:11,798 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:09:11,798 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:09:11,799 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:09:11,799 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:09:11,800 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:09:11,801 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:09:11,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:09:11,802 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:09:11,804 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:09:11,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:09:11,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:09:11,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:09:11,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:09:11,808 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:09:11,808 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:09:11,809 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:09:11,810 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:09:11,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:09:11,811 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:09:11,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:09:11,812 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:09:11,812 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:09:11,812 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:09:11,812 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:09:11,813 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:09:11,813 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:09:11,814 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 00:09:11,824 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:09:11,824 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:09:11,825 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:09:11,825 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:09:11,825 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:09:11,826 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 00:09:11,826 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 00:09:11,826 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:09:11,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:09:11,826 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:09:11,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:09:11,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:09:11,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:09:11,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:09:11,829 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 00:09:11,829 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_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 -> c0c6f9396ac757d71a8b83c6063958dd7f87da5d [2018-12-09 00:09:11,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:09:11,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:09:11,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:09:11,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:09:11,863 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:09:11,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:09:11,904 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/e85f5a098/81d3b25eab96456d93ab76540e01eecf/FLAG9b45e8449 [2018-12-09 00:09:12,345 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:09:12,345 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:09:12,352 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/e85f5a098/81d3b25eab96456d93ab76540e01eecf/FLAG9b45e8449 [2018-12-09 00:09:12,360 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/e85f5a098/81d3b25eab96456d93ab76540e01eecf [2018-12-09 00:09:12,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:09:12,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:09:12,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:09:12,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:09:12,365 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:09:12,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73559806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12, skipping insertion in model container [2018-12-09 00:09:12,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:09:12,392 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:09:12,635 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:09:12,641 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:09:12,676 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:09:12,706 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:09:12,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12 WrapperNode [2018-12-09 00:09:12,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:09:12,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:09:12,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:09:12,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:09:12,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:09:12,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:09:12,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:09:12,727 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:09:12,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... [2018-12-09 00:09:12,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:09:12,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:09:12,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:09:12,752 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:09:12,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:09:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:09:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-12-09 00:09:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-12-09 00:09:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-12-09 00:09:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-12-09 00:09:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-12-09 00:09:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-12-09 00:09:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-09 00:09:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-12-09 00:09:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-12-09 00:09:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-12-09 00:09:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-12-09 00:09:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-12-09 00:09:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-12-09 00:09:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-12-09 00:09:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-12-09 00:09:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:09:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:09:13,028 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:09:13,028 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 00:09:13,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:09:13 BoogieIcfgContainer [2018-12-09 00:09:13,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:09:13,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:09:13,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:09:13,031 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:09:13,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:09:12" (1/3) ... [2018-12-09 00:09:13,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bea9119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:09:13, skipping insertion in model container [2018-12-09 00:09:13,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:09:12" (2/3) ... [2018-12-09 00:09:13,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bea9119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:09:13, skipping insertion in model container [2018-12-09 00:09:13,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:09:13" (3/3) ... [2018-12-09 00:09:13,033 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:09:13,039 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:09:13,044 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 00:09:13,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 00:09:13,071 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:09:13,071 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:09:13,071 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:09:13,071 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:09:13,071 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:09:13,072 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:09:13,072 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:09:13,072 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:09:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2018-12-09 00:09:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 00:09:13,087 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:09:13,087 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] [2018-12-09 00:09:13,088 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:09:13,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash 659425201, now seen corresponding path program 1 times [2018-12-09 00:09:13,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:09:13,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:13,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,126 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:09:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:13,180 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 00:09:13,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:09:13,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:09:13,182 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 00:09:13,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:09:13,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:09:13,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:09:13,194 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 2 states. [2018-12-09 00:09:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:09:13,213 INFO L93 Difference]: Finished difference Result 199 states and 241 transitions. [2018-12-09 00:09:13,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:09:13,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 00:09:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:09:13,220 INFO L225 Difference]: With dead ends: 199 [2018-12-09 00:09:13,220 INFO L226 Difference]: Without dead ends: 98 [2018-12-09 00:09:13,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:09:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-12-09 00:09:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-12-09 00:09:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-12-09 00:09:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2018-12-09 00:09:13,249 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 24 [2018-12-09 00:09:13,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:09:13,249 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2018-12-09 00:09:13,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:09:13,250 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2018-12-09 00:09:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 00:09:13,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:09:13,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:09:13,251 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:09:13,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:13,251 INFO L82 PathProgramCache]: Analyzing trace with hash 629383312, now seen corresponding path program 1 times [2018-12-09 00:09:13,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:09:13,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:13,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,253 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:09:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:13,299 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 00:09:13,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:09:13,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:09:13,299 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 00:09:13,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:09:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:09:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:09:13,301 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 4 states. [2018-12-09 00:09:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:09:13,315 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2018-12-09 00:09:13,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:09:13,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 00:09:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:09:13,318 INFO L225 Difference]: With dead ends: 104 [2018-12-09 00:09:13,318 INFO L226 Difference]: Without dead ends: 102 [2018-12-09 00:09:13,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:09:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-12-09 00:09:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-12-09 00:09:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-09 00:09:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2018-12-09 00:09:13,326 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 24 [2018-12-09 00:09:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:09:13,326 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2018-12-09 00:09:13,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:09:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2018-12-09 00:09:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 00:09:13,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:09:13,327 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] [2018-12-09 00:09:13,327 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:09:13,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2090980679, now seen corresponding path program 1 times [2018-12-09 00:09:13,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:09:13,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:13,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,328 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:09:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:13,386 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 00:09:13,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:09:13,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:09:13,386 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 00:09:13,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:09:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:09:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:09:13,387 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 4 states. [2018-12-09 00:09:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:09:13,489 INFO L93 Difference]: Finished difference Result 216 states and 243 transitions. [2018-12-09 00:09:13,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 00:09:13,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 00:09:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:09:13,491 INFO L225 Difference]: With dead ends: 216 [2018-12-09 00:09:13,491 INFO L226 Difference]: Without dead ends: 130 [2018-12-09 00:09:13,491 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 00:09:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-12-09 00:09:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2018-12-09 00:09:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-12-09 00:09:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2018-12-09 00:09:13,499 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 24 [2018-12-09 00:09:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:09:13,500 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2018-12-09 00:09:13,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:09:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2018-12-09 00:09:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 00:09:13,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:09:13,500 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] [2018-12-09 00:09:13,500 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:09:13,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:13,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1991624851, now seen corresponding path program 1 times [2018-12-09 00:09:13,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:09:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,502 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:09:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:13,600 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 00:09:13,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:09:13,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:09:13,601 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 00:09:13,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:09:13,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:09:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:09:13,601 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 8 states. [2018-12-09 00:09:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:09:13,804 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2018-12-09 00:09:13,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 00:09:13,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-12-09 00:09:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:09:13,806 INFO L225 Difference]: With dead ends: 130 [2018-12-09 00:09:13,806 INFO L226 Difference]: Without dead ends: 112 [2018-12-09 00:09:13,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-12-09 00:09:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-12-09 00:09:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2018-12-09 00:09:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-12-09 00:09:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2018-12-09 00:09:13,813 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 28 [2018-12-09 00:09:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:09:13,813 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2018-12-09 00:09:13,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:09:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2018-12-09 00:09:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 00:09:13,814 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:09:13,814 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:09:13,814 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:09:13,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:13,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1163996909, now seen corresponding path program 1 times [2018-12-09 00:09:13,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:09:13,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:13,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:09:13,815 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:09:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:15,256 WARN L180 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2018-12-09 00:09:16,518 WARN L180 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-12-09 00:09:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:09:16,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 00:09:16,860 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 00:09:16,860 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-12-09 00:09:16,861 INFO L205 CegarAbsIntRunner]: [0], [2], [3], [7], [13], [15], [17], [20], [24], [32], [65], [66], [67], [68], [86], [87], [121], [123], [126], [127], [150], [151], [159], [162], [170], [171], [172], [173], [174], [175], [176], [177], [178], [179], [185], [199], [200], [209], [210], [211] [2018-12-09 00:09:16,883 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 00:09:16,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 00:09:17,064 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 00:09:17,065 INFO L272 AbstractInterpreter]: Visited 40 different actions 100 times. Merged at 8 different actions 16 times. Never widened. Performed 990 root evaluator evaluations with a maximum evaluation depth of 9. Performed 990 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 1 fixpoints after 1 different actions. Largest state had 37 variables. [2018-12-09 00:09:17,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:09:17,075 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 00:09:17,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 00:09:17,075 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 00:09:17,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:09:17,084 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 00:09:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:09:17,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:09:17,142 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-12-09 00:09:17,155 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,165 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-09 00:09:17,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2018-12-09 00:09:17,169 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,185 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,187 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,191 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2018-12-09 00:09:17,192 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 00:09:17,215 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:09:17,229 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:09:17,251 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:09:17,251 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:51, output treesize:138 [2018-12-09 00:09:17,321 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2018-12-09 00:09:17,322 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2018-12-09 00:09:17,359 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,394 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,395 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,396 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,396 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2018-12-09 00:09:17,397 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,416 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:147, output treesize:35 [2018-12-09 00:09:17,485 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,486 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,487 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,488 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,488 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,489 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2018-12-09 00:09:17,489 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,525 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,527 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2018-12-09 00:09:17,527 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,565 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,566 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,566 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,567 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 40 [2018-12-09 00:09:17,567 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,584 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,584 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:153, output treesize:40 [2018-12-09 00:09:17,662 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-12-09 00:09:17,665 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 5 treesize of output 1 [2018-12-09 00:09:17,665 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,666 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,675 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:17,676 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2018-12-09 00:09:17,681 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 15 [2018-12-09 00:09:17,682 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,685 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 5 treesize of output 1 [2018-12-09 00:09:17,685 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,686 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,697 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:17,698 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:38, output treesize:17 [2018-12-09 00:09:33,868 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-09 00:09:54,087 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 00:09:54,112 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 67 [2018-12-09 00:09:54,149 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 14 treesize of output 13 [2018-12-09 00:09:54,150 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,205 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 76 [2018-12-09 00:09:54,208 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 26 [2018-12-09 00:09:54,213 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,217 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 43 [2018-12-09 00:09:54,217 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,227 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,260 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 74 [2018-12-09 00:09:54,264 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 31 treesize of output 38 [2018-12-09 00:09:54,265 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,282 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,294 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,306 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,339 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,340 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,345 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 113 [2018-12-09 00:09:54,434 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 110 [2018-12-09 00:09:54,437 INFO L267 ElimStorePlain]: Start of recursive call 10: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2018-12-09 00:09:54,437 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-09 00:09:54,438 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,489 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,500 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2018-12-09 00:09:54,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 22 [2018-12-09 00:09:54,506 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,506 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:09:54,506 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,511 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,532 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 72 [2018-12-09 00:09:54,545 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 66 [2018-12-09 00:09:54,546 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-12-09 00:09:54,564 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,573 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,576 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,589 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 90 [2018-12-09 00:09:54,592 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 22 [2018-12-09 00:09:54,594 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,595 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:09:54,595 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,600 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:09:54,618 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,620 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:09:54,623 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 77 [2018-12-09 00:09:54,646 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 97 [2018-12-09 00:09:54,650 INFO L267 ElimStorePlain]: Start of recursive call 21: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 14 xjuncts. [2018-12-09 00:09:54,731 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-09 00:09:54,798 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-09 00:09:54,892 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2018-12-09 00:09:55,004 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 16 dim-0 vars, and 7 xjuncts. [2018-12-09 00:09:55,004 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 7 variables, input treesize:263, output treesize:1286 [2018-12-09 00:09:55,323 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 112 [2018-12-09 00:09:55,643 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-12-09 00:09:55,920 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-12-09 00:09:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:09:56,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 00:10:05,681 WARN L180 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-12-09 00:10:07,834 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_41 Int) (v_prenex_40 Int) (v_prenex_42 Int)) (not (= |c_~#mutexes~0.base| (select (select (let ((.cse0 (let ((.cse2 (select (select |c_old(#memory_$Pointer$.base)| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| .cse2 (store (select |c_old(#memory_$Pointer$.base)| .cse2) (+ v_prenex_42 4) |c_ldv_list_add_#in~new.base|)))) (store .cse1 |c_ldv_list_add_#in~new.base| (store (store (select .cse1 |c_ldv_list_add_#in~new.base|) v_prenex_41 .cse2) (+ v_prenex_41 4) |c_~#drvlist~0.base|)))))) (store .cse0 |c_~#drvlist~0.base| (store (select .cse0 |c_~#drvlist~0.base|) v_prenex_40 |c_ldv_list_add_#in~new.base|))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|)))) (not (= |c_ldv_list_add_#in~head.base| |c_~#drvlist~0.base|)) (not (= |c_ldv_list_add_#in~head.offset| |c_~#drvlist~0.offset|)) (exists ((v___ldv_list_add_~prev.offset_7 Int) (v___ldv_list_add_~new.offset_7 Int) (v___ldv_list_add_~next.offset_7 Int)) (not (= (select (select (let ((.cse3 (let ((.cse4 (let ((.cse5 (select (select |c_old(#memory_$Pointer$.base)| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_old(#memory_$Pointer$.offset)| .cse5 (store (select |c_old(#memory_$Pointer$.offset)| .cse5) (+ v___ldv_list_add_~next.offset_7 4) v___ldv_list_add_~new.offset_7))))) (store .cse4 |c_ldv_list_add_#in~new.base| (store (store (select .cse4 |c_ldv_list_add_#in~new.base|) v___ldv_list_add_~new.offset_7 v___ldv_list_add_~next.offset_7) (+ v___ldv_list_add_~new.offset_7 4) v___ldv_list_add_~prev.offset_7))))) (store .cse3 |c_~#drvlist~0.base| (store (select .cse3 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_7 v___ldv_list_add_~new.offset_7))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.offset|))) (and (forall ((v_prenex_45 Int) (v_prenex_44 Int) (v_prenex_43 Int)) (= |c_~#mutexes~0.base| (select (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ldv_list_add_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ldv_list_add_#t~mem6.base|) (+ v_prenex_44 4) c_ldv_list_add_~new.base)))) (store .cse7 c_ldv_list_add_~new.base (store (store (select .cse7 c_ldv_list_add_~new.base) v_prenex_43 |c_ldv_list_add_#t~mem6.base|) (+ v_prenex_43 4) c_ldv_list_add_~head.base))))) (store .cse6 c_ldv_list_add_~head.base (store (select .cse6 c_ldv_list_add_~head.base) v_prenex_45 c_ldv_list_add_~new.base))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (forall ((v___ldv_list_add_~new.offset_10 Int) (v___ldv_list_add_~next.offset_10 Int) (v___ldv_list_add_~prev.offset_10 Int)) (= (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ldv_list_add_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_list_add_#t~mem6.base|) (+ v___ldv_list_add_~next.offset_10 4) v___ldv_list_add_~new.offset_10)))) (store .cse9 c_ldv_list_add_~new.base (store (store (select .cse9 c_ldv_list_add_~new.base) v___ldv_list_add_~new.offset_10 v___ldv_list_add_~next.offset_10) (+ v___ldv_list_add_~new.offset_10 4) v___ldv_list_add_~prev.offset_10))))) (store .cse8 c_ldv_list_add_~head.base (store (select .cse8 c_ldv_list_add_~head.base) v___ldv_list_add_~prev.offset_10 v___ldv_list_add_~new.offset_10))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.offset|)))) is different from true [2018-12-09 00:10:07,838 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-12-09 00:10:07,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 37 [2018-12-09 00:10:08,593 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 00:10:08,594 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 35181 column 139: unknown constant v_prenex_67 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:114) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:668) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:775) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 00:10:08,597 INFO L168 Benchmark]: Toolchain (without parser) took 56235.43 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 953.5 MB in the beginning and 1.3 GB in the end (delta: -306.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 00:10:08,598 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:10:08,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2018-12-09 00:10:08,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:10:08,599 INFO L168 Benchmark]: Boogie Preprocessor took 24.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:10:08,599 INFO L168 Benchmark]: RCFGBuilder took 276.98 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: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. [2018-12-09 00:10:08,599 INFO L168 Benchmark]: TraceAbstraction took 55567.84 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -190.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:10:08,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 276.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 55567.84 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -190.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 35181 column 139: unknown constant v_prenex_67 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 35181 column 139: unknown constant v_prenex_67: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) 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 00:10:09,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:10:09,855 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:10:09,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:10:09,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:10:09,862 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:10:09,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:10:09,864 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:10:09,865 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:10:09,866 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:10:09,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:10:09,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:10:09,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:10:09,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:10:09,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:10:09,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:10:09,870 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:10:09,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:10:09,872 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:10:09,873 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:10:09,874 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:10:09,874 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:10:09,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:10:09,875 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:10:09,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:10:09,876 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:10:09,876 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:10:09,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:10:09,877 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:10:09,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:10:09,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:10:09,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:10:09,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:10:09,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:10:09,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:10:09,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:10:09,880 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 00:10:09,891 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:10:09,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:10:09,891 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:10:09,892 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:10:09,892 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:10:09,892 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:10:09,892 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:10:09,892 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:10:09,893 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:10:09,893 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:10:09,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:10:09,893 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 00:10:09,894 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 00:10:09,895 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:10:09,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:10:09,895 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:10:09,895 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:10:09,895 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:10:09,895 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:10:09,896 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:10:09,896 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 00:10:09,897 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:10:09,897 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 00:10:09,897 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 00:10:09,897 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_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 -> c0c6f9396ac757d71a8b83c6063958dd7f87da5d [2018-12-09 00:10:09,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:10:09,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:10:09,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:10:09,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:10:09,931 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:10:09,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:10:09,967 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/a20689993/6159615a2c62493abd1658039c60469b/FLAG550e21006 [2018-12-09 00:10:10,427 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:10:10,427 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:10:10,434 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/a20689993/6159615a2c62493abd1658039c60469b/FLAG550e21006 [2018-12-09 00:10:10,442 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/data/a20689993/6159615a2c62493abd1658039c60469b [2018-12-09 00:10:10,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:10:10,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:10:10,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:10:10,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:10:10,447 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:10:10,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2657aed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10, skipping insertion in model container [2018-12-09 00:10:10,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:10:10,475 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:10:10,656 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:10:10,662 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:10:10,729 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:10:10,755 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:10:10,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10 WrapperNode [2018-12-09 00:10:10,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:10:10,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:10:10,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:10:10,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:10:10,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:10:10,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:10:10,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:10:10,776 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:10:10,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... [2018-12-09 00:10:10,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:10:10,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:10:10,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:10:10,801 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:10:10,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-12-09 00:10:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-12-09 00:10:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-12-09 00:10:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-12-09 00:10:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-12-09 00:10:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-12-09 00:10:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-12-09 00:10:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 00:10:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-12-09 00:10:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:10:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:10:11,111 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:10:11,111 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 00:10:11,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:10:11 BoogieIcfgContainer [2018-12-09 00:10:11,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:10:11,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:10:11,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:10:11,114 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:10:11,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:10:10" (1/3) ... [2018-12-09 00:10:11,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ae4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:10:11, skipping insertion in model container [2018-12-09 00:10:11,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:10:10" (2/3) ... [2018-12-09 00:10:11,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ae4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:10:11, skipping insertion in model container [2018-12-09 00:10:11,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:10:11" (3/3) ... [2018-12-09 00:10:11,116 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded_true-unreach-call.i [2018-12-09 00:10:11,124 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:10:11,130 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 00:10:11,139 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 00:10:11,156 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:10:11,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:10:11,156 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:10:11,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:10:11,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:10:11,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:10:11,157 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:10:11,157 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:10:11,157 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:10:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2018-12-09 00:10:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:10:11,171 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:10:11,172 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] [2018-12-09 00:10:11,173 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:10:11,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:10:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash 344412138, now seen corresponding path program 1 times [2018-12-09 00:10:11,179 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 00:10:11,180 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:10:11,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:10:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:10:11,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:10:11,251 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 00:10:11,252 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:10:11,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:10:11,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:10:11,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:10:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:10:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:10:11,265 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 2 states. [2018-12-09 00:10:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:10:11,285 INFO L93 Difference]: Finished difference Result 191 states and 233 transitions. [2018-12-09 00:10:11,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:10:11,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-09 00:10:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:10:11,292 INFO L225 Difference]: With dead ends: 191 [2018-12-09 00:10:11,292 INFO L226 Difference]: Without dead ends: 94 [2018-12-09 00:10:11,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:10:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-12-09 00:10:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-12-09 00:10:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-12-09 00:10:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2018-12-09 00:10:11,322 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 23 [2018-12-09 00:10:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:10:11,322 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2018-12-09 00:10:11,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:10:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2018-12-09 00:10:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:10:11,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:10:11,324 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] [2018-12-09 00:10:11,324 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:10:11,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:10:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1596219605, now seen corresponding path program 1 times [2018-12-09 00:10:11,325 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 00:10:11,325 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:10:11,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:10:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:10:11,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:10:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:10:11,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:10:11,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:10:11,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:10:11,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:10:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:10:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:10:11,384 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 4 states. [2018-12-09 00:10:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:10:11,397 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2018-12-09 00:10:11,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:10:11,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 00:10:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:10:11,399 INFO L225 Difference]: With dead ends: 99 [2018-12-09 00:10:11,399 INFO L226 Difference]: Without dead ends: 97 [2018-12-09 00:10:11,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:10:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-12-09 00:10:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-12-09 00:10:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-12-09 00:10:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2018-12-09 00:10:11,408 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 23 [2018-12-09 00:10:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:10:11,408 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2018-12-09 00:10:11,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:10:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2018-12-09 00:10:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:10:11,409 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:10:11,409 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] [2018-12-09 00:10:11,409 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:10:11,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:10:11,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1545425950, now seen corresponding path program 1 times [2018-12-09 00:10:11,410 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 00:10:11,410 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:10:11,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:10:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:10:11,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:10:11,527 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 17 treesize of output 13 [2018-12-09 00:10:11,531 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 13 treesize of output 5 [2018-12-09 00:10:11,531 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:11,533 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:11,543 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 00:10:11,546 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 00:10:11,546 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:11,548 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:11,554 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:11,555 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:34, output treesize:12 [2018-12-09 00:10:11,567 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 00:10:11,568 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:10:11,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:10:11,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:10:11,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:10:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:10:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:10:11,570 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 4 states. [2018-12-09 00:10:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:10:11,974 INFO L93 Difference]: Finished difference Result 205 states and 232 transitions. [2018-12-09 00:10:11,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:10:11,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 00:10:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:10:11,976 INFO L225 Difference]: With dead ends: 205 [2018-12-09 00:10:11,976 INFO L226 Difference]: Without dead ends: 124 [2018-12-09 00:10:11,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 00:10:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-12-09 00:10:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2018-12-09 00:10:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-09 00:10:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2018-12-09 00:10:11,985 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2018-12-09 00:10:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:10:11,985 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2018-12-09 00:10:11,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:10:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2018-12-09 00:10:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 00:10:11,985 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:10:11,986 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] [2018-12-09 00:10:11,986 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:10:11,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:10:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash 330168167, now seen corresponding path program 1 times [2018-12-09 00:10:11,986 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 00:10:11,986 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/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 00:10:11,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:10:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:10:12,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:10:12,253 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 00:10:12,253 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:10:12,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:10:12,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:10:12,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:10:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:10:12,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:10:12,255 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 8 states. [2018-12-09 00:10:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:10:12,880 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2018-12-09 00:10:12,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:10:12,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-09 00:10:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:10:12,882 INFO L225 Difference]: With dead ends: 124 [2018-12-09 00:10:12,882 INFO L226 Difference]: Without dead ends: 107 [2018-12-09 00:10:12,882 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:10:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-09 00:10:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2018-12-09 00:10:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-09 00:10:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2018-12-09 00:10:12,890 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 27 [2018-12-09 00:10:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:10:12,890 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2018-12-09 00:10:12,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:10:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2018-12-09 00:10:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 00:10:12,891 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:10:12,891 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] [2018-12-09 00:10:12,891 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:10:12,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:10:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash 759782182, now seen corresponding path program 1 times [2018-12-09 00:10:12,892 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 00:10:12,892 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 00:10:12,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:10:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:10:13,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:10:13,045 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-12-09 00:10:13,065 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,072 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-09 00:10:13,084 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 28 [2018-12-09 00:10:13,085 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-09 00:10:13,116 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,117 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2018-12-09 00:10:13,117 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,136 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:10:13,159 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:10:13,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:10:13,196 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:51, output treesize:139 [2018-12-09 00:10:13,292 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,293 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,295 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,296 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2018-12-09 00:10:13,296 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,363 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2018-12-09 00:10:13,364 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,413 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:10:13,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2018-12-09 00:10:13,414 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,442 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,442 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:158, output treesize:35 [2018-12-09 00:10:13,495 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,496 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,497 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,497 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2018-12-09 00:10:13,498 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,554 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,555 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,556 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,556 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,558 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,559 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 48 [2018-12-09 00:10:13,560 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,620 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,621 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:10:13,622 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2018-12-09 00:10:13,622 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,651 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,651 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:164, output treesize:40 [2018-12-09 00:10:13,717 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-12-09 00:10:13,720 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 5 treesize of output 1 [2018-12-09 00:10:13,720 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,722 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,743 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:13,743 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2018-12-09 00:10:13,755 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 15 [2018-12-09 00:10:13,755 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,761 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 5 treesize of output 1 [2018-12-09 00:10:13,761 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,762 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:13,769 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:38, output treesize:17 [2018-12-09 00:10:30,258 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-09 00:10:50,928 WARN L180 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 00:10:50,952 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:50,985 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:50,986 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 178 [2018-12-09 00:10:52,977 WARN L180 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-12-09 00:10:52,979 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-09 00:10:52,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:53,196 INFO L303 Elim1Store]: Index analysis took 215 ms [2018-12-09 00:10:53,953 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 156 treesize of output 165 [2018-12-09 00:10:53,956 INFO L267 ElimStorePlain]: Start of recursive call 4: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2018-12-09 00:10:55,388 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:55,644 INFO L303 Elim1Store]: Index analysis took 337 ms [2018-12-09 00:10:55,645 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 145 [2018-12-09 00:10:55,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-09 00:10:55,685 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:55,686 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-09 00:10:55,686 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 00:10:55,787 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:10:56,169 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:56,327 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:10:56,328 INFO L303 Elim1Store]: Index analysis took 221 ms [2018-12-09 00:10:56,328 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 71 [2018-12-09 00:10:56,445 INFO L303 Elim1Store]: Index analysis took 115 ms [2018-12-09 00:10:56,498 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 79 [2018-12-09 00:10:56,504 INFO L267 ElimStorePlain]: Start of recursive call 9: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 14 xjuncts. [2018-12-09 00:10:59,811 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-09 00:11:03,133 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-09 00:11:03,232 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:03,537 INFO L303 Elim1Store]: Index analysis took 402 ms [2018-12-09 00:11:03,538 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 143 [2018-12-09 00:11:03,559 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-09 00:11:03,594 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:03,595 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-09 00:11:03,595 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:03,759 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:04,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:04,347 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:04,348 INFO L303 Elim1Store]: Index analysis took 266 ms [2018-12-09 00:11:04,348 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 66 [2018-12-09 00:11:04,468 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 54 [2018-12-09 00:11:04,470 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-12-09 00:11:04,752 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:04,895 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:08,345 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2018-12-09 00:11:11,872 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 124 [2018-12-09 00:11:12,666 WARN L180 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-12-09 00:11:12,672 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 14 treesize of output 13 [2018-12-09 00:11:12,672 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:12,869 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:12,876 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:12,887 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:12,893 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:12,893 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:12,916 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:13,014 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:13,028 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:13,029 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:13,065 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:13,091 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:13,158 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:13,205 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 124 [2018-12-09 00:11:14,020 WARN L180 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-12-09 00:11:14,027 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 14 treesize of output 13 [2018-12-09 00:11:14,027 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,241 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:14,249 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:14,258 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:14,263 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:14,264 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,287 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,374 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:14,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:14,386 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,421 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,450 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,521 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:14,577 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 105 [2018-12-09 00:11:14,909 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:11:14,918 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 14 treesize of output 13 [2018-12-09 00:11:14,918 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,101 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:15,108 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:15,117 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:15,121 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:15,121 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,141 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,204 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:15,214 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:15,215 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,247 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,271 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,325 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:15,402 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2018-12-09 00:11:16,171 WARN L180 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-12-09 00:11:16,181 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 14 treesize of output 13 [2018-12-09 00:11:16,181 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,417 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:16,425 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:16,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:16,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:16,440 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,477 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,570 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:16,586 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:16,586 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,625 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,653 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,735 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:16,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2018-12-09 00:11:17,037 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:11:17,043 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 14 treesize of output 13 [2018-12-09 00:11:17,044 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,223 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:17,231 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:17,239 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:17,243 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:17,243 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,261 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,324 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:17,333 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:17,334 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,362 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,382 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,430 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:17,485 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 117 [2018-12-09 00:11:18,148 WARN L180 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-12-09 00:11:18,156 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 14 treesize of output 13 [2018-12-09 00:11:18,156 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,343 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:18,350 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:18,359 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:18,364 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:18,365 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,384 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,472 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:18,483 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:11:18,484 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,516 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,542 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,600 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:18,692 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 115 [2018-12-09 00:11:19,029 WARN L180 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-12-09 00:11:19,038 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 14 treesize of output 13 [2018-12-09 00:11:19,038 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:11:19,261 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:11:19,270 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:19,275 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:11:19,275 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,300 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,383 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:11:19,391 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-12-09 00:11:19,392 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,428 INFO L267 ElimStorePlain]: Start of recursive call 62: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,455 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:19,517 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:22,082 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 23 dim-0 vars, and 7 xjuncts. [2018-12-09 00:11:22,082 INFO L202 ElimStorePlain]: Needed 63 recursive calls to eliminate 7 variables, input treesize:263, output treesize:1271 [2018-12-09 00:11:22,839 WARN L180 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 118 [2018-12-09 00:11:27,099 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-12-09 00:11:31,727 WARN L180 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-12-09 00:11:36,579 WARN L180 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-12-09 00:11:45,604 WARN L180 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-12-09 00:11:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:11:45,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 00:11:46,755 WARN L180 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-09 00:11:47,136 WARN L180 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-09 00:11:47,956 WARN L180 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-12-09 00:11:49,270 WARN L180 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 52 [2018-12-09 00:11:50,429 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 62 [2018-12-09 00:11:50,893 WARN L180 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-09 00:11:52,815 WARN L180 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 58 [2018-12-09 00:11:53,797 WARN L180 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:11:58,238 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 00:11:58,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 00:11:58,241 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_824d7d57-78e1-431a-9cf6-9e42cc6d0553/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 00:11:58,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:11:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:11:58,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:11:58,299 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-12-09 00:11:58,312 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:58,317 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-09 00:11:58,320 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2018-12-09 00:11:58,320 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:58,341 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:58,343 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:58,348 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2018-12-09 00:11:58,349 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 00:11:58,375 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:11:58,397 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:11:58,431 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:11:58,431 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:48, output treesize:131 [2018-12-09 00:11:59,027 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:11:59,028 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2018-12-09 00:11:59,028 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,086 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:11:59,087 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2018-12-09 00:11:59,087 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,145 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2018-12-09 00:11:59,145 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,174 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,174 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:148, output treesize:32 [2018-12-09 00:11:59,493 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,494 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,496 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:11:59,497 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2018-12-09 00:11:59,497 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,563 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,563 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:11:59,564 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2018-12-09 00:11:59,564 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,640 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,642 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,643 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:11:59,643 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37 [2018-12-09 00:11:59,644 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,675 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:11:59,676 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:154, output treesize:37 [2018-12-09 00:12:00,034 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-12-09 00:12:00,037 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 5 treesize of output 1 [2018-12-09 00:12:00,037 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,038 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,055 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2018-12-09 00:12:00,057 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 5 treesize of output 1 [2018-12-09 00:12:00,057 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,062 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 5 treesize of output 1 [2018-12-09 00:12:00,062 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,063 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,071 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:12:00,071 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2018-12-09 00:12:33,602 WARN L180 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-09 00:13:12,751 WARN L180 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-09 00:13:13,058 INFO L303 Elim1Store]: Index analysis took 303 ms [2018-12-09 00:13:13,059 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 161 [2018-12-09 00:13:13,852 WARN L180 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-12-09 00:13:14,075 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 128 [2018-12-09 00:13:14,076 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-09 00:13:14,076 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-09 00:13:14,076 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:14,515 INFO L303 Elim1Store]: Index analysis took 119 ms [2018-12-09 00:13:14,516 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 135 [2018-12-09 00:13:14,528 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-09 00:13:14,547 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:13:14,548 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-09 00:13:14,549 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:14,599 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:14,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 51 [2018-12-09 00:13:14,832 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-12-09 00:13:14,832 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:14,905 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:14,988 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:15,159 INFO L303 Elim1Store]: Index analysis took 170 ms [2018-12-09 00:13:15,160 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 137 [2018-12-09 00:13:15,170 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-09 00:13:15,183 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:13:15,184 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-09 00:13:15,184 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:15,251 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:15,509 INFO L303 Elim1Store]: Index analysis took 112 ms [2018-12-09 00:13:15,509 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2018-12-09 00:13:15,554 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2018-12-09 00:13:15,555 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-12-09 00:13:15,848 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 00:13:16,060 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-09 00:13:16,367 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 00:13:16,844 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 105 [2018-12-09 00:13:17,203 WARN L180 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:13:17,211 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 14 treesize of output 13 [2018-12-09 00:13:17,211 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,398 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:13:17,404 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:13:17,416 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:13:17,422 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:13:17,422 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,441 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,511 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:13:17,521 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:13:17,521 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,554 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,580 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,637 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:17,678 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 109 [2018-12-09 00:13:18,031 WARN L180 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-12-09 00:13:18,039 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 14 treesize of output 13 [2018-12-09 00:13:18,039 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,225 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:13:18,231 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:13:18,238 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:13:18,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:13:18,244 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,266 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:13:18,342 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:13:18,342 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,373 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,397 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,451 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:18,493 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2018-12-09 00:13:18,818 WARN L180 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:13:18,826 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 14 treesize of output 13 [2018-12-09 00:13:18,826 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,009 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-09 00:13:19,017 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 00:13:19,029 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 00:13:19,033 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-09 00:13:19,034 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,052 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,141 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-09 00:13:19,155 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 20 treesize of output 37 [2018-12-09 00:13:19,155 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,191 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,221 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,281 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:13:19,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-12-09 00:13:19,537 INFO L202 ElimStorePlain]: Needed 35 recursive calls to eliminate 8 variables, input treesize:263, output treesize:344 [2018-12-09 00:13:34,934 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-12-09 00:13:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:13:47,727 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 00:13:48,387 WARN L180 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-09 00:13:48,804 WARN L180 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-09 00:13:49,627 WARN L180 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-12-09 00:13:50,372 WARN L180 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-12-09 00:13:51,578 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 62 [2018-12-09 00:13:52,319 WARN L180 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-09 00:13:53,544 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 58 [2018-12-09 00:13:54,613 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 54 [2018-12-09 00:14:13,202 WARN L180 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 00:14:13,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 00:14:13,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2018-12-09 00:14:13,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 00:14:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 00:14:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=876, Unknown=66, NotChecked=0, Total=1056 [2018-12-09 00:14:13,218 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 28 states. [2018-12-09 00:14:27,519 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2018-12-09 00:14:53,899 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-12-09 00:15:50,527 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2018-12-09 00:16:10,900 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-09 00:16:25,193 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-09 00:16:45,620 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-12-09 00:18:14,671 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-09 00:18:14,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 00:18:14,671 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:699) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) 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:126) 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: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-12-09 00:18:14,674 INFO L168 Benchmark]: Toolchain (without parser) took 484229.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 182.5 MB). Free memory was 939.3 MB in the beginning and 981.0 MB in the end (delta: -41.7 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:18:14,674 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 00:18:14,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-09 00:18:14,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.02 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 00:18:14,675 INFO L168 Benchmark]: Boogie Preprocessor took 25.38 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:18:14,675 INFO L168 Benchmark]: RCFGBuilder took 310.58 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:18:14,675 INFO L168 Benchmark]: TraceAbstraction took 483561.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.1 GB in the beginning and 981.0 MB in the end (delta: 86.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:18:14,676 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 310.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.02 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 25.38 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 310.58 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 483561.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.0 MB). Free memory was 1.1 GB in the beginning and 981.0 MB in the end (delta: 86.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...