./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/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 eae8c8207b0324f06a17c285b94ce79cd751d6f9 ..................................................................................................................................................................................................................................................................................... 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-cad4683 [2019-11-15 19:54:06,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 19:54:06,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 19:54:06,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 19:54:06,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 19:54:06,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 19:54:06,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 19:54:06,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 19:54:06,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 19:54:06,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 19:54:06,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 19:54:06,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 19:54:06,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 19:54:06,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 19:54:06,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 19:54:06,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 19:54:06,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 19:54:06,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 19:54:06,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 19:54:06,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 19:54:06,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 19:54:06,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 19:54:06,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 19:54:06,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 19:54:06,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 19:54:06,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 19:54:06,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 19:54:06,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 19:54:06,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 19:54:06,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 19:54:06,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 19:54:06,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 19:54:06,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 19:54:06,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 19:54:06,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 19:54:06,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 19:54:06,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 19:54:06,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 19:54:06,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 19:54:06,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 19:54:06,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 19:54:06,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 19:54:06,997 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 19:54:06,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 19:54:06,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 19:54:06,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 19:54:06,999 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 19:54:06,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 19:54:07,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 19:54:07,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 19:54:07,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 19:54:07,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 19:54:07,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 19:54:07,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 19:54:07,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 19:54:07,001 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 19:54:07,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 19:54:07,001 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 19:54:07,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 19:54:07,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 19:54:07,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 19:54:07,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 19:54:07,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 19:54:07,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:54:07,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 19:54:07,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 19:54:07,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 19:54:07,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 19:54:07,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 19:54:07,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 19:54:07,004 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_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/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 -> eae8c8207b0324f06a17c285b94ce79cd751d6f9 [2019-11-15 19:54:07,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 19:54:07,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 19:54:07,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 19:54:07,071 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 19:54:07,071 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 19:54:07,072 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test06.c [2019-11-15 19:54:07,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/data/8addbea7c/36228220db0140b3a3bd3dcd37e89a39/FLAGca3d9c0a6 [2019-11-15 19:54:07,514 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 19:54:07,515 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/sv-benchmarks/c/ldv-regression/test06.c [2019-11-15 19:54:07,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/data/8addbea7c/36228220db0140b3a3bd3dcd37e89a39/FLAGca3d9c0a6 [2019-11-15 19:54:07,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/data/8addbea7c/36228220db0140b3a3bd3dcd37e89a39 [2019-11-15 19:54:07,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 19:54:07,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 19:54:07,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 19:54:07,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 19:54:07,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 19:54:07,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:54:07" (1/1) ... [2019-11-15 19:54:07,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69750992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:07, skipping insertion in model container [2019-11-15 19:54:07,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:54:07" (1/1) ... [2019-11-15 19:54:07,944 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 19:54:07,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 19:54:08,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:54:08,237 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 19:54:08,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:54:08,274 INFO L192 MainTranslator]: Completed translation [2019-11-15 19:54:08,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08 WrapperNode [2019-11-15 19:54:08,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 19:54:08,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 19:54:08,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 19:54:08,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 19:54:08,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 19:54:08,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 19:54:08,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 19:54:08,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 19:54:08,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... [2019-11-15 19:54:08,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 19:54:08,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 19:54:08,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 19:54:08,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 19:54:08,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/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 [2019-11-15 19:54:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 19:54:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 19:54:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 19:54:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 19:54:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 19:54:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 19:54:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 19:54:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 19:54:08,705 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 19:54:08,705 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 19:54:08,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:54:08 BoogieIcfgContainer [2019-11-15 19:54:08,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 19:54:08,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 19:54:08,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 19:54:08,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 19:54:08,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 07:54:07" (1/3) ... [2019-11-15 19:54:08,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b316dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:54:08, skipping insertion in model container [2019-11-15 19:54:08,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:54:08" (2/3) ... [2019-11-15 19:54:08,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b316dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:54:08, skipping insertion in model container [2019-11-15 19:54:08,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:54:08" (3/3) ... [2019-11-15 19:54:08,717 INFO L109 eAbstractionObserver]: Analyzing ICFG test06.c [2019-11-15 19:54:08,725 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 19:54:08,734 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 19:54:08,744 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 19:54:08,766 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 19:54:08,766 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 19:54:08,766 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 19:54:08,766 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 19:54:08,767 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 19:54:08,767 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 19:54:08,767 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 19:54:08,767 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 19:54:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-15 19:54:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 19:54:08,786 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:54:08,787 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 19:54:08,789 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:54:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:54:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash 889629865, now seen corresponding path program 1 times [2019-11-15 19:54:08,803 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:54:08,803 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090191592] [2019-11-15 19:54:08,803 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:54:08,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:54:08,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:54:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:54:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:54:08,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090191592] [2019-11-15 19:54:08,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:54:08,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:54:08,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214449599] [2019-11-15 19:54:08,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 19:54:08,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:54:09,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 19:54:09,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 19:54:09,011 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-15 19:54:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:54:09,031 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-15 19:54:09,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 19:54:09,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-15 19:54:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:54:09,041 INFO L225 Difference]: With dead ends: 18 [2019-11-15 19:54:09,041 INFO L226 Difference]: Without dead ends: 8 [2019-11-15 19:54:09,043 INFO L600 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 [2019-11-15 19:54:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-15 19:54:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 19:54:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 19:54:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-15 19:54:09,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 6 [2019-11-15 19:54:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:54:09,072 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-15 19:54:09,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 19:54:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-15 19:54:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 19:54:09,072 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:54:09,073 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:54:09,073 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 19:54:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:54:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1804905802, now seen corresponding path program 1 times [2019-11-15 19:54:09,074 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:54:09,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060807857] [2019-11-15 19:54:09,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:54:09,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:54:09,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:54:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:54:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:54:09,278 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 19:54:09,278 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 19:54:09,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 07:54:09 BoogieIcfgContainer [2019-11-15 19:54:09,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 19:54:09,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 19:54:09,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 19:54:09,321 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 19:54:09,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:54:08" (3/4) ... [2019-11-15 19:54:09,324 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 19:54:09,378 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d14ac5e-46cf-4f32-aa4b-5c2695876a39/bin/uautomizer/witness.graphml [2019-11-15 19:54:09,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 19:54:09,380 INFO L168 Benchmark]: Toolchain (without parser) took 1450.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -148.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-15 19:54:09,381 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:54:09,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 19:54:09,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:54:09,382 INFO L168 Benchmark]: Boogie Preprocessor took 21.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:54:09,383 INFO L168 Benchmark]: RCFGBuilder took 371.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-15 19:54:09,384 INFO L168 Benchmark]: TraceAbstraction took 613.06 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-11-15 19:54:09,384 INFO L168 Benchmark]: Witness Printer took 57.78 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. [2019-11-15 19:54:09,387 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 371.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 613.06 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.78 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 40]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int a, b; [L22] int *p1, *p2; [L24] p1 = &a [L25] p2 = &b [L27] b = 1 [L28] a = 5 [L30] EXPR \read(a) [L30] a-- [L32] EXPR \read(a) [L12] COND TRUE a == 4 [L5] EXPR \read(**p2) [L5] int *pq = *p2; [L7] EXPR \read(**p2) [L7] *p1 = *p2 [L8] *pq = 0 [L14] return 1; [L32] a = f(a, &p1, &p2) [L34] EXPR \read(*p1) [L34] COND TRUE *p1 == 0 [L40] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...