./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/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 0.1.23-1dbac8b [2018-11-10 05:05:33,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:05:33,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:05:33,817 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:05:33,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:05:33,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:05:33,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:05:33,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:05:33,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:05:33,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:05:33,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:05:33,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:05:33,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:05:33,823 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:05:33,824 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:05:33,825 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:05:33,825 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:05:33,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:05:33,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:05:33,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:05:33,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:05:33,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:05:33,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:05:33,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:05:33,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:05:33,833 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:05:33,833 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:05:33,834 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:05:33,834 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:05:33,835 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:05:33,835 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:05:33,836 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:05:33,836 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:05:33,836 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:05:33,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:05:33,837 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:05:33,837 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:05:33,847 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:05:33,847 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:05:33,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:05:33,848 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:05:33,848 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:05:33,848 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:05:33,849 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:05:33,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:05:33,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:05:33,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:05:33,851 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:05:33,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/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 [2018-11-10 05:05:33,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:05:33,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:05:33,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:05:33,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:05:33,891 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:05:33,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-11-10 05:05:33,936 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/data/39615699f/7329dd3523a64a38ada23015d2f23f94/FLAG3cee7ab78 [2018-11-10 05:05:34,357 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:05:34,357 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-11-10 05:05:34,361 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/data/39615699f/7329dd3523a64a38ada23015d2f23f94/FLAG3cee7ab78 [2018-11-10 05:05:34,373 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/data/39615699f/7329dd3523a64a38ada23015d2f23f94 [2018-11-10 05:05:34,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:05:34,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:05:34,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:05:34,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:05:34,381 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:05:34,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5678d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34, skipping insertion in model container [2018-11-10 05:05:34,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:05:34,409 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:05:34,518 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:05:34,524 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:05:34,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:05:34,543 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:05:34,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34 WrapperNode [2018-11-10 05:05:34,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:05:34,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:05:34,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:05:34,544 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:05:34,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... [2018-11-10 05:05:34,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:05:34,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:05:34,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:05:34,568 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:05:34,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/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 [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-10 05:05:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:05:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:05:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 05:05:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-10 05:05:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 05:05:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 05:05:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:05:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 05:05:34,811 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:05:34,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:05:34 BoogieIcfgContainer [2018-11-10 05:05:34,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:05:34,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:05:34,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:05:34,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:05:34,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:05:34" (1/3) ... [2018-11-10 05:05:34,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b91c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:05:34, skipping insertion in model container [2018-11-10 05:05:34,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:05:34" (2/3) ... [2018-11-10 05:05:34,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b91c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:05:34, skipping insertion in model container [2018-11-10 05:05:34,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:05:34" (3/3) ... [2018-11-10 05:05:34,817 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_false-unreach-call.c [2018-11-10 05:05:34,826 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:05:34,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:05:34,842 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:05:34,868 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:05:34,868 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:05:34,869 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:05:34,869 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:05:34,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:05:34,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:05:34,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:05:34,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:05:34,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:05:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-11-10 05:05:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-10 05:05:34,889 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:05:34,889 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:05:34,890 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:05:34,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:05:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash 50357199, now seen corresponding path program 1 times [2018-11-10 05:05:34,895 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:05:34,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:05:34,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:34,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:05:34,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:05:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 05:05:35,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:05:35,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:05:35,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:05:35,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:05:35,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:05:35,054 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-11-10 05:05:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:05:35,073 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2018-11-10 05:05:35,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:05:35,074 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 55 [2018-11-10 05:05:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:05:35,079 INFO L225 Difference]: With dead ends: 72 [2018-11-10 05:05:35,079 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 05:05:35,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:05:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 05:05:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-10 05:05:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 05:05:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-11-10 05:05:35,106 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 55 [2018-11-10 05:05:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:05:35,108 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-11-10 05:05:35,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:05:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-11-10 05:05:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-10 05:05:35,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:05:35,110 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:05:35,110 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:05:35,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:05:35,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1970704373, now seen corresponding path program 1 times [2018-11-10 05:05:35,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:05:35,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:05:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:35,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:05:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:05:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 05:05:35,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:05:35,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 05:05:35,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 05:05:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 05:05:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 05:05:35,181 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 3 states. [2018-11-10 05:05:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:05:35,194 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-11-10 05:05:35,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 05:05:35,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-11-10 05:05:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:05:35,195 INFO L225 Difference]: With dead ends: 68 [2018-11-10 05:05:35,195 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 05:05:35,196 INFO L605 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 [2018-11-10 05:05:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 05:05:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-10 05:05:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 05:05:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-11-10 05:05:35,201 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 57 [2018-11-10 05:05:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:05:35,201 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-11-10 05:05:35,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 05:05:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-11-10 05:05:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-10 05:05:35,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:05:35,203 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:05:35,203 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:05:35,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:05:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash 466700504, now seen corresponding path program 1 times [2018-11-10 05:05:35,203 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:05:35,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:05:35,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:35,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:05:35,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:05:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 05:05:35,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:05:35,413 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/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 [2018-11-10 05:05:35,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:05:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:05:35,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:05:35,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-10 05:05:35,837 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-10 05:05:35,838 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 05:05:35,843 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:05:35,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:05:35,846 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:5 [2018-11-10 05:05:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 05:05:35,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:05:35,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 23 [2018-11-10 05:05:35,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 05:05:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 05:05:35,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2018-11-10 05:05:35,873 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 23 states. [2018-11-10 05:05:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:05:36,338 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2018-11-10 05:05:36,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 05:05:36,338 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2018-11-10 05:05:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:05:36,340 INFO L225 Difference]: With dead ends: 102 [2018-11-10 05:05:36,340 INFO L226 Difference]: Without dead ends: 92 [2018-11-10 05:05:36,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2018-11-10 05:05:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-10 05:05:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2018-11-10 05:05:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-10 05:05:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2018-11-10 05:05:36,351 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 59 [2018-11-10 05:05:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:05:36,351 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2018-11-10 05:05:36,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 05:05:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2018-11-10 05:05:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-10 05:05:36,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:05:36,353 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:05:36,353 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:05:36,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:05:36,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1338737830, now seen corresponding path program 1 times [2018-11-10 05:05:36,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:05:36,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:05:36,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:36,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:05:36,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:05:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:05:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:05:36,423 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:05:36,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:05:36 BoogieIcfgContainer [2018-11-10 05:05:36,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:05:36,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:05:36,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:05:36,458 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:05:36,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:05:34" (3/4) ... [2018-11-10 05:05:36,460 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:05:36,501 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ac76e72b-c290-4628-a9fa-c4f0fc68cb98/bin-2019/uautomizer/witness.graphml [2018-11-10 05:05:36,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:05:36,502 INFO L168 Benchmark]: Toolchain (without parser) took 2125.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:05:36,503 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:05:36,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.02 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:36,503 INFO L168 Benchmark]: Boogie Preprocessor took 23.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:36,504 INFO L168 Benchmark]: RCFGBuilder took 243.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:36,504 INFO L168 Benchmark]: TraceAbstraction took 1645.77 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: -5.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:05:36,504 INFO L168 Benchmark]: Witness Printer took 43.23 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: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:36,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.02 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 243.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1645.77 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: -5.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.23 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: 5.1 MB). Peak memory consumption was 5.1 MB. 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] FCALL struct dummy d1, d2; VAL [\old(d1)=28, \old(d1)=22, \old(d2)=24, \old(d2)=27, d1={23:0}, d2={25:0}] [L32] CALL init() VAL [d1={23:0}, d2={25:0}] [L13] FCALL d1.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9, d1={23:0}, d2={25:0}] [L14] FCALL d1.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={23:0}, d2={25:0}] [L16] FCALL d2.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=20, d1={23:0}, d2={25:0}] [L17] RET, FCALL d2.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={23:0}, d2={25:0}] [L32] init() VAL [d1={23:0}, d2={25:0}] [L33] CALL, EXPR get_dummy() VAL [d1={23:0}, d2={25:0}] [L22] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={23:0}, d1={23:0}, d2={25:0}] [L22] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] EXPR get_dummy() VAL [d1={23:0}, d2={25:0}, get_dummy()={23:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={23:0}, d2={25:0}] [L22] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={23:0}, d1={23:0}, d2={25:0}] [L22] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] EXPR get_dummy() VAL [d1={23:0}, d2={25:0}, get_dummy()={23:0}, pd1={23:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={23:0}, d2={25:0}] [L22] COND FALSE, EXPR !(__VERIFIER_nondet_bool() ? &d1 : &d2) VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={25:0}, d1={23:0}, d2={25:0}] [L22] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] EXPR get_dummy() VAL [d1={23:0}, d2={25:0}, get_dummy()={25:0}, pd1={23:0}, pd2={23:0}] [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 VAL [d1={23:0}, d2={25:0}, i=0, pd1={23:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={23:0}, pd3={25:0}] [L35] EXPR, FCALL (*pd2).a VAL [(*pd2).a=9, d1={23:0}, d2={25:0}, i=0, pd1={23:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={23:0}, pd3={25:0}] [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=9, d1={23:0}, d2={25:0}, i=0, pd1={23:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={23:0}, pd3={25:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; VAL [d1={23:0}, d2={25:0}, i=0, pa={23:0}, pd1={23:0}, pd2={23:0}, pd3={25:0}] [L37] EXPR, FCALL pd3->a VAL [d1={23:0}, d2={25:0}, i=0, pa={23:0}, pd1={23:0}, pd2={23:0}, pd3={25:0}, pd3->a=20] [L37] i = pd3->a - 10 [L38] EXPR, FCALL \read(*pa) VAL [\read(*pa)=9, d1={23:0}, d2={25:0}, i=10, pa={23:0}, pd1={23:0}, pd2={23:0}, pd3={25:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=10, d1={23:0}, d2={25:0}, s1={23:0}] [L27] EXPR, FCALL s1->a VAL [\old(i)=10, d1={23:0}, d2={25:0}, i=10, s1={23:0}, s1={23:0}, s1->a=9] [L27] RET return s1->a == i; [L41] EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={23:0}, d2={25:0}, i=10, pa={23:0}, pd1={23:0}, pd2={23:0}, pd3={25:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={23:0}, d2={25:0}, i=10, pa={23:0}, pd1={23:0}, pd2={23:0}, pd3={25:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 179 SDtfs, 107 SDslu, 889 SDs, 0 SdLazy, 483 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 23 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 35630 SizeOfPredicates, 13 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...