./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_add_false-unreach-call_true-termination.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_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/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 278390a66d79c26df0bb9007834f9da647c0b479 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:11:02,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:11:02,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:11:02,719 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:11:02,719 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:11:02,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:11:02,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:11:02,721 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:11:02,722 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:11:02,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:11:02,723 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:11:02,723 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:11:02,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:11:02,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:11:02,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:11:02,725 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:11:02,725 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:11:02,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:11:02,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:11:02,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:11:02,729 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:11:02,729 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:11:02,730 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:11:02,731 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:11:02,731 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:11:02,731 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:11:02,732 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:11:02,732 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:11:02,733 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:11:02,733 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:11:02,733 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:11:02,734 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:11:02,734 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:11:02,734 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:11:02,734 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:11:02,735 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:11:02,735 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 12:11:02,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:11:02,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:11:02,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:11:02,743 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:11:02,743 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:11:02,743 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:11:02,743 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:11:02,743 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 12:11:02,743 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:11:02,744 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:11:02,744 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 12:11:02,744 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 12:11:02,744 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:11:02,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:11:02,744 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:11:02,745 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:11:02,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:11:02,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:11:02,746 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 12:11:02,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:11:02,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 12:11:02,747 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 12:11:02,747 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_c1d113dd-3c10-40db-a187-6c4c1c3818c8/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 -> 278390a66d79c26df0bb9007834f9da647c0b479 [2018-12-09 12:11:02,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:11:02,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:11:02,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:11:02,774 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:11:02,774 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:11:02,774 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_add_false-unreach-call_true-termination.i [2018-12-09 12:11:02,807 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/data/cc4043a8b/65aad16970114d538bfb696279f35e71/FLAG911da799f [2018-12-09 12:11:03,281 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:11:03,281 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/sv-benchmarks/c/ldv-sets/test_add_false-unreach-call_true-termination.i [2018-12-09 12:11:03,287 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/data/cc4043a8b/65aad16970114d538bfb696279f35e71/FLAG911da799f [2018-12-09 12:11:03,296 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/data/cc4043a8b/65aad16970114d538bfb696279f35e71 [2018-12-09 12:11:03,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:11:03,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:11:03,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:11:03,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:11:03,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:11:03,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74eb9a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03, skipping insertion in model container [2018-12-09 12:11:03,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:11:03,327 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:11:03,487 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:11:03,526 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:11:03,558 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:11:03,585 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:11:03,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03 WrapperNode [2018-12-09 12:11:03,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:11:03,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:11:03,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:11:03,586 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:11:03,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:11:03,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:11:03,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:11:03,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:11:03,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... [2018-12-09 12:11:03,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:11:03,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:11:03,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:11:03,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:11:03,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/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 12:11:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:11:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-12-09 12:11:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-12-09 12:11:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 12:11:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 12:11:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-09 12:11:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-09 12:11:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-12-09 12:11:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-12-09 12:11:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:11:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:11:03,831 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:11:03,831 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 12:11:03,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:11:03 BoogieIcfgContainer [2018-12-09 12:11:03,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:11:03,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:11:03,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:11:03,833 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:11:03,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:11:03" (1/3) ... [2018-12-09 12:11:03,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b04a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:11:03, skipping insertion in model container [2018-12-09 12:11:03,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:11:03" (2/3) ... [2018-12-09 12:11:03,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b04a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:11:03, skipping insertion in model container [2018-12-09 12:11:03,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:11:03" (3/3) ... [2018-12-09 12:11:03,835 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add_false-unreach-call_true-termination.i [2018-12-09 12:11:03,841 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:11:03,844 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 12:11:03,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 12:11:03,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:11:03,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:11:03,870 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:11:03,870 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:11:03,870 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:11:03,870 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:11:03,870 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:11:03,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:11:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-09 12:11:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 12:11:03,884 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:11:03,884 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:11:03,885 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:11:03,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:03,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1442632694, now seen corresponding path program 1 times [2018-12-09 12:11:03,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:11:03,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:03,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:11:03,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:03,922 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:11:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:11:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 12:11:04,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:11:04,002 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 12:11:04,003 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-12-09 12:11:04,004 INFO L205 CegarAbsIntRunner]: [4], [7], [10], [11], [24], [25], [26], [28], [36], [38], [42], [48], [60], [61], [64], [65], [66], [67], [68], [70], [71], [76], [77], [78] [2018-12-09 12:11:04,025 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:11:04,025 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:11:04,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 12:11:04,110 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Performed 153 root evaluator evaluations with a maximum evaluation depth of 3. Performed 153 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 29 variables. [2018-12-09 12:11:04,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:04,114 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 12:11:04,158 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 68.53% of their original sizes. [2018-12-09 12:11:04,158 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 12:11:04,199 INFO L418 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2018-12-09 12:11:04,199 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 12:11:04,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 12:11:04,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2018-12-09 12:11:04,200 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:11:04,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 12:11:04,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 12:11:04,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-09 12:11:04,207 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 9 states. [2018-12-09 12:11:04,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:11:04,615 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2018-12-09 12:11:04,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 12:11:04,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 12:11:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:11:04,624 INFO L225 Difference]: With dead ends: 88 [2018-12-09 12:11:04,624 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 12:11:04,626 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-12-09 12:11:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 12:11:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 12:11:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 12:11:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-12-09 12:11:04,657 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 28 [2018-12-09 12:11:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:11:04,657 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-12-09 12:11:04,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 12:11:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-12-09 12:11:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 12:11:04,659 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:11:04,659 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:11:04,659 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:11:04,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:04,660 INFO L82 PathProgramCache]: Analyzing trace with hash 542758643, now seen corresponding path program 1 times [2018-12-09 12:11:04,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:11:04,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:04,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:11:04,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:04,661 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:11:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:11:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 12:11:04,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:11:04,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:11:04,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:11:04,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:11:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:11:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:11:04,703 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 4 states. [2018-12-09 12:11:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:11:04,711 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-12-09 12:11:04,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:11:04,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 12:11:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:11:04,713 INFO L225 Difference]: With dead ends: 48 [2018-12-09 12:11:04,713 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 12:11:04,713 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 12:11:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 12:11:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 12:11:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 12:11:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-09 12:11:04,718 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 28 [2018-12-09 12:11:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:11:04,719 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-09 12:11:04,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:11:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-09 12:11:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 12:11:04,720 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:11:04,720 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:11:04,720 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:11:04,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2117361948, now seen corresponding path program 1 times [2018-12-09 12:11:04,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:11:04,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:04,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:11:04,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:04,722 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:11:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:11:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:11:04,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:11:04,915 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 12:11:04,916 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-12-09 12:11:04,916 INFO L205 CegarAbsIntRunner]: [4], [7], [10], [11], [24], [25], [26], [28], [36], [38], [42], [50], [53], [61], [64], [65], [66], [67], [68], [70], [71], [76], [77], [78] [2018-12-09 12:11:04,917 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 12:11:04,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 12:11:04,946 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 12:11:04,946 INFO L272 AbstractInterpreter]: Visited 24 different actions 28 times. Never merged. Never widened. Performed 226 root evaluator evaluations with a maximum evaluation depth of 4. Performed 226 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 32 variables. [2018-12-09 12:11:04,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:04,949 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 12:11:04,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:11:04,949 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/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 12:11:04,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:11:04,956 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 12:11:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:11:04,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:11:05,030 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 7 treesize of output 5 [2018-12-09 12:11:05,032 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 12:11:05,032 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:11:05,034 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:11:05,041 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 7 treesize of output 5 [2018-12-09 12:11:05,042 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 12:11:05,043 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 12:11:05,043 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:11:05,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:11:05,048 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-12-09 12:11:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:11:05,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 12:11:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:11:05,303 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-09 12:11:05,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [8] total 16 [2018-12-09 12:11:05,304 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:11:05,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 12:11:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 12:11:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-12-09 12:11:05,305 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2018-12-09 12:11:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:11:05,492 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-12-09 12:11:05,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 12:11:05,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-12-09 12:11:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:11:05,493 INFO L225 Difference]: With dead ends: 68 [2018-12-09 12:11:05,493 INFO L226 Difference]: Without dead ends: 58 [2018-12-09 12:11:05,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-12-09 12:11:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-09 12:11:05,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-12-09 12:11:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-09 12:11:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-12-09 12:11:05,498 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 28 [2018-12-09 12:11:05,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:11:05,498 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-12-09 12:11:05,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 12:11:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-12-09 12:11:05,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-09 12:11:05,499 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:11:05,499 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:11:05,499 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:11:05,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:11:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2034835195, now seen corresponding path program 1 times [2018-12-09 12:11:05,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:11:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:05,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:11:05,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:11:05,501 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:11:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:11:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:11:05,549 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 12:11:05,563 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 18 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 12:11:05,564 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 12:11:05,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:11:05 BoogieIcfgContainer [2018-12-09 12:11:05,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 12:11:05,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:11:05,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:11:05,572 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:11:05,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:11:03" (3/4) ... [2018-12-09 12:11:05,573 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 12:11:05,577 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 12:11:05,578 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 18 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-09 12:11:05,606 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c1d113dd-3c10-40db-a187-6c4c1c3818c8/bin-2019/utaipan/witness.graphml [2018-12-09 12:11:05,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:11:05,606 INFO L168 Benchmark]: Toolchain (without parser) took 2308.37 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.4 MB). Free memory was 957.1 MB in the beginning and 1.2 GB in the end (delta: -225.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:11:05,607 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:11:05,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:11:05,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:11:05,608 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 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 12:11:05,608 INFO L168 Benchmark]: RCFGBuilder took 206.92 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2018-12-09 12:11:05,608 INFO L168 Benchmark]: TraceAbstraction took 1740.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 82.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:11:05,608 INFO L168 Benchmark]: Witness Printer took 34.02 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:11:05,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.92 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1740.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 82.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 34.02 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 18 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 18 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 654]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L649] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [\old(s1)=null, \old(s1)=null, s1={17:0}] [L658] CALL foo() VAL [s1={17:0}] [L652] int j = __VERIFIER_nondet_int(); [L653] CALL ldv_set_add(j, &s1) VAL [\old(new)=0, s={17:0}, s1={17:0}] [L620] CALL, EXPR ldv_is_in_set(new, s) VAL [\old(e)=0, s={17:0}, s1={17:0}] [L638] struct ldv_list_element *m; [L639] EXPR (s)->next [L639] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L639] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=0, __mptr={17:0}, e=0, m={17:-4}, s={17:0}, s={17:0}, s1={17:0}] [L639] COND FALSE !(&m->list != (s)) VAL [\old(e)=0, __mptr={17:0}, e=0, m={17:-4}, s={17:0}, s={17:0}, s1={17:0}] [L644] return 0; VAL [\old(e)=0, \result=0, __mptr={17:0}, e=0, m={17:-4}, s={17:0}, s={17:0}, s1={17:0}] [L620] RET, EXPR ldv_is_in_set(new, s) VAL [\old(new)=0, ldv_is_in_set(new, s)=0, new=0, s={17:0}, s={17:0}, s1={17:0}] [L620] COND TRUE !ldv_is_in_set(new, s) [L621] struct ldv_list_element *le; VAL [\old(new)=0, new=0, s={17:0}, s={17:0}, s1={17:0}] [L622] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, s1={17:0}] [L563] void *ptr = malloc(size); [L565] return ptr; VAL [\old(size)=12, \result={21:0}, malloc(size)={21:0}, ptr={21:0}, s1={17:0}, size=12] [L622] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(new)=0, ldv_successful_malloc(sizeof(struct ldv_list_element))={21:0}, new=0, s={17:0}, s={17:0}, s1={17:0}] [L622] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L623] le->e = new VAL [\old(new)=0, le={21:0}, new=0, s={17:0}, s={17:0}, s1={17:0}] [L624] CALL ldv_list_add(&le->list, s) VAL [head={17:0}, new={21:4}, s1={17:0}] [L592] EXPR head->next VAL [head={17:0}, head={17:0}, head->next={17:0}, new={21:4}, new={21:4}, s1={17:0}] [L592] CALL __ldv_list_add(new, head, head->next) VAL [new={21:4}, next={17:0}, prev={17:0}, s1={17:0}] [L580] next->prev = new [L581] new->next = next [L582] new->prev = prev [L583] prev->next = new VAL [new={21:4}, new={21:4}, next={17:0}, next={17:0}, prev={17:0}, prev={17:0}, s1={17:0}] [L592] RET __ldv_list_add(new, head, head->next) VAL [head={17:0}, head={17:0}, head->next={17:0}, new={21:4}, new={21:4}, s1={17:0}] [L624] RET ldv_list_add(&le->list, s) VAL [\old(new)=0, le={21:0}, new=0, s={17:0}, s={17:0}, s1={17:0}] [L653] RET ldv_set_add(j, &s1) VAL [j=0, s1={17:0}] [L654] CALL ldv_is_in_set(j, &s1) VAL [\old(e)=0, s={17:0}, s1={17:0}] [L638] struct ldv_list_element *m; [L639] EXPR (s)->next [L639] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L639] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=0, __mptr={21:4}, e=0, m={21:0}, s={17:0}, s={17:0}, s1={17:0}] [L639] COND TRUE &m->list != (s) [L640] EXPR m->e VAL [\old(e)=0, __mptr={21:4}, e=0, m={21:0}, m->e=0, s={17:0}, s={17:0}, s1={17:0}] [L640] COND TRUE m->e == e [L641] return 1; VAL [\old(e)=0, \result=1, __mptr={21:4}, e=0, m={21:0}, s={17:0}, s={17:0}, s1={17:0}] [L654] RET ldv_is_in_set(j, &s1) VAL [j=0, ldv_is_in_set(j, &s1)=1, s1={17:0}] [L654] COND TRUE ldv_is_in_set(j, &s1) [L654] __VERIFIER_error() VAL [j=0, s1={17:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 47 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 144 SDslu, 253 SDs, 0 SdLazy, 105 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9226631393298059 AbsIntWeakeningRatio, 1.4444444444444444 AbsIntAvgWeakeningVarsNumRemoved, 4.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 34641 SizeOfPredicates, 18 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 18/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...