./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54c9c3f123e280a35d761deadfd537de0a28f053 ................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 05:45:23,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:45:23,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:45:23,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:45:23,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:45:23,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:45:23,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:45:23,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:45:23,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:45:23,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:45:23,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:45:23,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:45:23,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:45:23,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:45:23,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:45:23,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:45:23,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:45:23,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:45:23,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:45:23,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:45:23,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:45:23,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:45:23,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:45:23,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:45:23,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:45:23,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:45:23,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:45:23,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:45:23,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:45:23,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:45:23,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:45:23,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:45:23,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:45:23,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:45:23,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:45:23,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:45:23,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:45:23,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:45:23,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:45:23,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:45:23,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:45:23,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:45:23,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:45:23,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:45:23,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:45:23,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:45:23,638 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:45:23,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:45:23,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:45:23,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:45:23,640 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:45:23,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:45:23,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:45:23,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:45:23,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:45:23,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:45:23,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:45:23,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:45:23,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:45:23,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:45:23,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:45:23,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:45:23,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:45:23,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:45:23,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:45:23,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer 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 -> Automizer 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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-11-20 05:45:23,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:45:23,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:45:23,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:45:23,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:45:23,807 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:45:23,808 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-20 05:45:23,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/data/450d1b6fb/cc33e10c9c294cb3905b45a7f5cc2cbe/FLAG63077782c [2019-11-20 05:45:24,249 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:45:24,250 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/sv-benchmarks/c/ldv-regression/test22-2.c [2019-11-20 05:45:24,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/data/450d1b6fb/cc33e10c9c294cb3905b45a7f5cc2cbe/FLAG63077782c [2019-11-20 05:45:24,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/data/450d1b6fb/cc33e10c9c294cb3905b45a7f5cc2cbe [2019-11-20 05:45:24,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:45:24,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:45:24,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:45:24,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:45:24,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:45:24,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:24,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee6fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24, skipping insertion in model container [2019-11-20 05:45:24,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:24,683 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:45:24,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:45:24,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:45:24,916 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:45:24,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:45:24,957 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:45:24,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24 WrapperNode [2019-11-20 05:45:24,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:45:24,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:45:24,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:45:24,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:45:24,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:24,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:24,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:45:24,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:45:24,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:45:24,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:45:25,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... [2019-11-20 05:45:25,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:45:25,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:45:25,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:45:25,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:45:25,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/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 [2019-11-20 05:45:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 05:45:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:45:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:45:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:45:25,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:45:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:45:25,392 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:45:25,392 INFO L285 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-20 05:45:25,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:45:25 BoogieIcfgContainer [2019-11-20 05:45:25,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:45:25,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:45:25,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:45:25,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:45:25,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:45:24" (1/3) ... [2019-11-20 05:45:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ecda3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:45:25, skipping insertion in model container [2019-11-20 05:45:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:45:24" (2/3) ... [2019-11-20 05:45:25,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ecda3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:45:25, skipping insertion in model container [2019-11-20 05:45:25,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:45:25" (3/3) ... [2019-11-20 05:45:25,400 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-11-20 05:45:25,409 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:45:25,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:45:25,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:45:25,446 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:45:25,446 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:45:25,446 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:45:25,446 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:45:25,446 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:45:25,446 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:45:25,447 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:45:25,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:45:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-20 05:45:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 05:45:25,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:45:25,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:45:25,471 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:45:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:45:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2019-11-20 05:45:25,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:45:25,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075295771] [2019-11-20 05:45:25,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:45:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:45:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:45:25,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075295771] [2019-11-20 05:45:25,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:45:25,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:45:25,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772453785] [2019-11-20 05:45:25,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 05:45:25,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:45:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:45:25,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:45:25,655 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-20 05:45:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:45:25,670 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-20 05:45:25,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:45:25,671 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-11-20 05:45:25,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:45:25,678 INFO L225 Difference]: With dead ends: 34 [2019-11-20 05:45:25,678 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 05:45:25,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:45:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 05:45:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 05:45:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 05:45:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-20 05:45:25,706 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-11-20 05:45:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:45:25,707 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-20 05:45:25,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 05:45:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-20 05:45:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 05:45:25,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:45:25,708 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:45:25,708 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:45:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:45:25,709 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2019-11-20 05:45:25,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:45:25,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556012110] [2019-11-20 05:45:25,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:45:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:45:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:45:25,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556012110] [2019-11-20 05:45:25,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:45:25,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-20 05:45:25,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840259337] [2019-11-20 05:45:25,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:45:25,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:45:25,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:45:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:45:25,968 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2019-11-20 05:45:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:45:26,425 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-11-20 05:45:26,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 05:45:26,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 05:45:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:45:26,430 INFO L225 Difference]: With dead ends: 71 [2019-11-20 05:45:26,431 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 05:45:26,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-11-20 05:45:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 05:45:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2019-11-20 05:45:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 05:45:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-20 05:45:26,444 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-11-20 05:45:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:45:26,445 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-20 05:45:26,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:45:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-20 05:45:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 05:45:26,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:45:26,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:45:26,448 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:45:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:45:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2019-11-20 05:45:26,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:45:26,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097154062] [2019-11-20 05:45:26,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:45:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:45:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:45:26,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:45:26,607 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:45:26,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:45:26 BoogieIcfgContainer [2019-11-20 05:45:26,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:45:26,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:45:26,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:45:26,644 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:45:26,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:45:25" (3/4) ... [2019-11-20 05:45:26,646 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:45:26,716 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eeb209c5-388d-446b-96a6-be8f43481972/bin/uautomizer/witness.graphml [2019-11-20 05:45:26,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:45:26,718 INFO L168 Benchmark]: Toolchain (without parser) took 2050.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.6 MB in the beginning and 1.0 GB in the end (delta: -61.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:45:26,719 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:45:26,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.6 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:45:26,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.20 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. [2019-11-20 05:45:26,720 INFO L168 Benchmark]: Boogie Preprocessor took 29.24 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. [2019-11-20 05:45:26,721 INFO L168 Benchmark]: RCFGBuilder took 370.77 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: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:45:26,721 INFO L168 Benchmark]: TraceAbstraction took 1248.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.1 MB). Peak memory consumption was 89.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:45:26,721 INFO L168 Benchmark]: Witness Printer took 73.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:45:26,723 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.6 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.20 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 29.24 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 370.77 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: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1248.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.1 MB). Peak memory consumption was 89.1 MB. Max. memory is 11.5 GB. * Witness Printer took 73.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={2:0}, d2={3:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={2:0}, d2={3:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={2:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...