./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/alt_test_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/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 28a1c96d0dcbab8e66df0b7e0c92c558fac63e78 ................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 12:15:09,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:15:09,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:15:09,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:15:09,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:15:09,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:15:09,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:15:09,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:15:09,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:15:09,599 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:15:09,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:15:09,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:15:09,600 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:15:09,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:15:09,601 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:15:09,601 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:15:09,602 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:15:09,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:15:09,604 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:15:09,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:15:09,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:15:09,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:15:09,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:15:09,608 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:15:09,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:15:09,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:15:09,609 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:15:09,610 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:15:09,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:15:09,611 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:15:09,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:15:09,612 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:15:09,612 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:15:09,612 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:15:09,613 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:15:09,613 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:15:09,613 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:15:09,621 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:15:09,621 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:15:09,622 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:15:09,622 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:15:09,622 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:15:09,622 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:15:09,622 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:15:09,623 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:15:09,624 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:15:09,624 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:15:09,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:15:09,624 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:15:09,624 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:15:09,624 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:15:09,625 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:15:09,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:15:09,626 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:15:09,626 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:15:09,627 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:15:09,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:15:09,627 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:15:09,627 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_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/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 -> 28a1c96d0dcbab8e66df0b7e0c92c558fac63e78 [2018-11-18 12:15:09,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:15:09,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:15:09,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:15:09,663 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:15:09,664 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:15:09,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/alt_test_true-termination.c_false-unreach-call.i [2018-11-18 12:15:09,707 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/data/ac0485cf3/3bcc1984333b4b408751d3fe1c4264b2/FLAGfa76a01c3 [2018-11-18 12:15:10,159 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:15:10,160 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/sv-benchmarks/c/ldv-regression/alt_test_true-termination.c_false-unreach-call.i [2018-11-18 12:15:10,170 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/data/ac0485cf3/3bcc1984333b4b408751d3fe1c4264b2/FLAGfa76a01c3 [2018-11-18 12:15:10,180 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/data/ac0485cf3/3bcc1984333b4b408751d3fe1c4264b2 [2018-11-18 12:15:10,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:15:10,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:15:10,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:15:10,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:15:10,186 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:15:10,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702a538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10, skipping insertion in model container [2018-11-18 12:15:10,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:15:10,227 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:15:10,452 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:15:10,456 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:15:10,484 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:15:10,602 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:15:10,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10 WrapperNode [2018-11-18 12:15:10,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:15:10,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:15:10,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:15:10,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:15:10,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:15:10,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:15:10,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:15:10,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:15:10,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... [2018-11-18 12:15:10,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:15:10,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:15:10,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:15:10,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:15:10,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/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 [2018-11-18 12:15:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:15:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:15:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:15:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:15:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:15:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:15:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 12:15:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 12:15:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2018-11-18 12:15:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2018-11-18 12:15:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2018-11-18 12:15:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2018-11-18 12:15:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:15:10,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:15:10,893 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:15:10,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:15:10 BoogieIcfgContainer [2018-11-18 12:15:10,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:15:10,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:15:10,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:15:10,898 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:15:10,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:15:10" (1/3) ... [2018-11-18 12:15:10,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28887b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:15:10, skipping insertion in model container [2018-11-18 12:15:10,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:15:10" (2/3) ... [2018-11-18 12:15:10,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28887b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:15:10, skipping insertion in model container [2018-11-18 12:15:10,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:15:10" (3/3) ... [2018-11-18 12:15:10,900 INFO L112 eAbstractionObserver]: Analyzing ICFG alt_test_true-termination.c_false-unreach-call.i [2018-11-18 12:15:10,908 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:15:10,915 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:15:10,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:15:10,958 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:15:10,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:15:10,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:15:10,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:15:10,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:15:10,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:15:10,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:15:10,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:15:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 12:15:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:15:10,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:10,978 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:10,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:15:10,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1044108918, now seen corresponding path program 1 times [2018-11-18 12:15:10,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:15:11,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:11,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:15:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:15:11,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:15:11,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:15:11,125 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:15:11,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:15:11,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:15:11,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:15:11,137 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-11-18 12:15:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:11,175 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2018-11-18 12:15:11,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:15:11,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-18 12:15:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:11,182 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:15:11,182 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 12:15:11,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:15:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 12:15:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-11-18 12:15:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:15:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-18 12:15:11,213 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2018-11-18 12:15:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:11,213 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-18 12:15:11,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:15:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-18 12:15:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:15:11,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:11,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:11,215 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:15:11,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1745173496, now seen corresponding path program 1 times [2018-11-18 12:15:11,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:15:11,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:11,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,218 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:15:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:15:11,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:15:11,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:15:11,249 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:15:11,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:15:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:15:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:15:11,250 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 3 states. [2018-11-18 12:15:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:11,256 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-11-18 12:15:11,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:15:11,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-18 12:15:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:11,258 INFO L225 Difference]: With dead ends: 42 [2018-11-18 12:15:11,258 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 12:15:11,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:15:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 12:15:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 12:15:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 12:15:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-18 12:15:11,262 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-11-18 12:15:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:11,262 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-18 12:15:11,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:15:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-18 12:15:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 12:15:11,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:11,263 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:11,263 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:15:11,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:11,263 INFO L82 PathProgramCache]: Analyzing trace with hash 124895752, now seen corresponding path program 1 times [2018-11-18 12:15:11,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:15:11,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:11,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,265 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:15:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:15:11,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:15:11,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:15:11,371 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:15:11,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:15:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:15:11,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:15:11,372 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-11-18 12:15:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:11,427 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-11-18 12:15:11,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:15:11,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-18 12:15:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:11,428 INFO L225 Difference]: With dead ends: 40 [2018-11-18 12:15:11,428 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 12:15:11,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:15:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 12:15:11,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 12:15:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 12:15:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-18 12:15:11,433 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-11-18 12:15:11,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:11,433 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-18 12:15:11,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:15:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-18 12:15:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:15:11,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:11,434 INFO L375 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] [2018-11-18 12:15:11,434 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:15:11,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1592798083, now seen corresponding path program 1 times [2018-11-18 12:15:11,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:15:11,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:11,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:11,436 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:15:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:15:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:15:11,475 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:15:11,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:15:11 BoogieIcfgContainer [2018-11-18 12:15:11,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:15:11,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:15:11,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:15:11,503 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:15:11,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:15:10" (3/4) ... [2018-11-18 12:15:11,506 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 12:15:11,544 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b6f787d6-12d8-4a91-b65b-1bd2e5b87703/bin-2019/utaipan/witness.graphml [2018-11-18 12:15:11,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:15:11,545 INFO L168 Benchmark]: Toolchain (without parser) took 1362.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -93.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,546 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:15:11,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 67.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.24 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,547 INFO L168 Benchmark]: Boogie Preprocessor took 18.63 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,547 INFO L168 Benchmark]: RCFGBuilder took 244.76 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,548 INFO L168 Benchmark]: TraceAbstraction took 608.06 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,548 INFO L168 Benchmark]: Witness Printer took 41.17 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:11,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 419.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 67.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.24 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.63 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.76 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 608.06 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.17 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; VAL [\old(globalState)=8, globalState=0] [L1612] CALL, EXPR l_malloc(sizeof(int)) VAL [\old(globalState)=0, \old(size)=4, globalState=0] [L1619] EXPR, FCALL malloc(size) [L1619] void *retVal = malloc(size); VAL [\old(globalState)=0, \old(size)=4, globalState=0, malloc(size)={7:0}, retVal={7:0}, size=4] [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 VAL [\old(globalState)=0, \old(size)=4, globalState=1, malloc(size)={7:0}, retVal={7:0}, size=4] [L1622] RET return retVal; VAL [\old(globalState)=0, \old(size)=4, \result={7:0}, globalState=1, malloc(size)={7:0}, retVal={7:0}, size=4] [L1612] EXPR l_malloc(sizeof(int)) VAL [\old(argc)=11, \old(globalState)=0, argc=11, argv={9:6}, argv={9:6}, globalState=1, l_malloc(sizeof(int))={7:0}] [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) VAL [\old(globalState)=1, globalState=1, ptr={7:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={7:0}, ptr={7:0}] [L1629] COND TRUE (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={7:0}, ptr={7:0}] [L1630] globalState = 0 [L1631] RET, FCALL free(ptr) VAL [\old(globalState)=1, globalState=0, ptr={7:0}, ptr={7:0}] [L1613] l_free(a) VAL [\old(argc)=11, \old(globalState)=0, a={7:0}, argc=11, argv={9:6}, argv={9:6}, globalState=0] [L1614] CALL l_free(a) VAL [\old(globalState)=0, globalState=0, ptr={7:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={7:0}, ptr={7:0}] [L1629] COND FALSE !((globalState == 1) ? (0) : __blast_assert ()) VAL [\old(globalState)=0, globalState=0, ptr={7:0}, ptr={7:0}] [L1629] CALL __blast_assert () VAL [\old(globalState)=0, globalState=0] [L1601] __VERIFIER_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 15 SDslu, 143 SDs, 0 SdLazy, 51 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...