./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --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/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/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 65263b67fd81174d35f819c28bc33cb1f3e6621f ......................................................................................................................................................................................................................................................................................................................................................................................... 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 [2019-10-22 08:54:46,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:46,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:46,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:46,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:46,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:46,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:46,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:46,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:46,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:46,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:46,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:46,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:46,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:46,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:46,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:46,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:46,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:46,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:46,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:46,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:46,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:46,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:46,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:46,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:46,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:46,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:46,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:46,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:46,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:46,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:46,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:46,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:46,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:46,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:46,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:46,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:46,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:46,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:46,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:46,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:46,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:54:46,088 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:46,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:46,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:46,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:46,089 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:46,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:46,090 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:46,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:46,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:46,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:46,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:46,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:46,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:46,091 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:46,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:46,092 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:46,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:46,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:46,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:46,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:46,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:46,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:46,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:46,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:46,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:46,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:46,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:46,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:46,094 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/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/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 -> 65263b67fd81174d35f819c28bc33cb1f3e6621f [2019-10-22 08:54:46,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:46,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:46,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:46,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:46,140 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:46,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-10-22 08:54:46,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/data/6c6304f42/930b402df39e4d4189c816b418e56675/FLAG549d588e2 [2019-10-22 08:54:46,651 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:46,652 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-10-22 08:54:46,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/data/6c6304f42/930b402df39e4d4189c816b418e56675/FLAG549d588e2 [2019-10-22 08:54:46,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/data/6c6304f42/930b402df39e4d4189c816b418e56675 [2019-10-22 08:54:46,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:46,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:46,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:46,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:46,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:46,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6186f677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:46, skipping insertion in model container [2019-10-22 08:54:46,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:46" (1/1) ... [2019-10-22 08:54:46,997 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:47,041 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:47,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:47,508 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:47,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:47,625 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:47,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47 WrapperNode [2019-10-22 08:54:47,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:47,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:47,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:47,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:47,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:47,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:47,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:47,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:47,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... [2019-10-22 08:54:47,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:47,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:47,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:47,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:47,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/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 [2019-10-22 08:54:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:54:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:54:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:54:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:54:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 08:54:47,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:47,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:48,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:48,667 INFO L284 CfgBuilder]: Removed 137 assume(true) statements. [2019-10-22 08:54:48,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:48 BoogieIcfgContainer [2019-10-22 08:54:48,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:48,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:48,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:48,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:48,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:46" (1/3) ... [2019-10-22 08:54:48,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b8538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:48, skipping insertion in model container [2019-10-22 08:54:48,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:47" (2/3) ... [2019-10-22 08:54:48,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b8538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:48, skipping insertion in model container [2019-10-22 08:54:48,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:48" (3/3) ... [2019-10-22 08:54:48,677 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2019-10-22 08:54:48,686 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:48,694 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-10-22 08:54:48,706 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-10-22 08:54:48,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:48,731 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:48,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:48,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:48,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:48,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:48,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:48,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2019-10-22 08:54:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:54:48,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:48,757 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:48,759 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:48,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:48,766 INFO L82 PathProgramCache]: Analyzing trace with hash 586891724, now seen corresponding path program 1 times [2019-10-22 08:54:48,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:48,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239400032] [2019-10-22 08:54:48,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:48,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:48,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:48,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239400032] [2019-10-22 08:54:48,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:48,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:48,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388371002] [2019-10-22 08:54:48,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:54:48,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:48,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:54:48,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:54:48,919 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2019-10-22 08:54:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:48,950 INFO L93 Difference]: Finished difference Result 292 states and 486 transitions. [2019-10-22 08:54:48,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:54:48,951 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 08:54:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:48,963 INFO L225 Difference]: With dead ends: 292 [2019-10-22 08:54:48,963 INFO L226 Difference]: Without dead ends: 141 [2019-10-22 08:54:48,967 INFO L600 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 [2019-10-22 08:54:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-22 08:54:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-10-22 08:54:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-22 08:54:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2019-10-22 08:54:49,010 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 13 [2019-10-22 08:54:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:49,010 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2019-10-22 08:54:49,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:54:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2019-10-22 08:54:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:54:49,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:49,012 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:49,012 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1788456629, now seen corresponding path program 1 times [2019-10-22 08:54:49,013 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:49,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713372893] [2019-10-22 08:54:49,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:49,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:49,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:49,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713372893] [2019-10-22 08:54:49,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:49,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-22 08:54:49,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737578982] [2019-10-22 08:54:49,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:54:49,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:49,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:54:49,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:54:49,710 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 13 states. [2019-10-22 08:54:50,453 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-10-22 08:54:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:51,274 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2019-10-22 08:54:51,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:54:51,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2019-10-22 08:54:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:51,276 INFO L225 Difference]: With dead ends: 234 [2019-10-22 08:54:51,276 INFO L226 Difference]: Without dead ends: 230 [2019-10-22 08:54:51,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:54:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-10-22 08:54:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 144. [2019-10-22 08:54:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 08:54:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2019-10-22 08:54:51,305 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 24 [2019-10-22 08:54:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:51,305 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2019-10-22 08:54:51,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:54:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2019-10-22 08:54:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 08:54:51,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:51,306 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-22 08:54:51,306 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash 720092185, now seen corresponding path program 1 times [2019-10-22 08:54:51,311 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:51,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906416032] [2019-10-22 08:54:51,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,312 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:51,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906416032] [2019-10-22 08:54:51,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:51,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-22 08:54:51,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123330005] [2019-10-22 08:54:51,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:54:51,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:54:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:54:51,646 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 13 states. [2019-10-22 08:54:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:52,417 INFO L93 Difference]: Finished difference Result 252 states and 273 transitions. [2019-10-22 08:54:52,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:54:52,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2019-10-22 08:54:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:52,420 INFO L225 Difference]: With dead ends: 252 [2019-10-22 08:54:52,420 INFO L226 Difference]: Without dead ends: 248 [2019-10-22 08:54:52,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:54:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-10-22 08:54:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 144. [2019-10-22 08:54:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 08:54:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2019-10-22 08:54:52,435 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 26 [2019-10-22 08:54:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:52,435 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2019-10-22 08:54:52,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:54:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2019-10-22 08:54:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:54:52,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:52,436 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-22 08:54:52,437 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:52,437 INFO L82 PathProgramCache]: Analyzing trace with hash 586745765, now seen corresponding path program 1 times [2019-10-22 08:54:52,438 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:52,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714944140] [2019-10-22 08:54:52,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:52,561 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:52,561 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:52 BoogieIcfgContainer [2019-10-22 08:54:52,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:52,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:52,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:52,601 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:52,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:48" (3/4) ... [2019-10-22 08:54:52,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:52,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_28f103b6-caf1-45ef-b2d4-43618e491e6d/bin/uautomizer/witness.graphml [2019-10-22 08:54:52,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:52,659 INFO L168 Benchmark]: Toolchain (without parser) took 5685.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,659 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:52,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.26 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,661 INFO L168 Benchmark]: Boogie Preprocessor took 46.95 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,661 INFO L168 Benchmark]: RCFGBuilder took 936.09 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,661 INFO L168 Benchmark]: TraceAbstraction took 3930.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:52,662 INFO L168 Benchmark]: Witness Printer took 56.47 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:52,664 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 649.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.26 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.95 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 936.09 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3930.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 56.47 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] const struct node *p1, *p2; [L577] struct node *list = ((void *)0); [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L580] COND FALSE !(__VERIFIER_nondet_int()) [L581] EXPR \read(*list) [L581] *pp2 = list [L582] COND FALSE !(__VERIFIER_nondet_int()) [L584] EXPR \read(*list) [L584] *pp1 = list [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L587] COND FALSE !(__VERIFIER_nondet_int()) [L588] EXPR \read(*list) [L588] return list; [L577] struct node *list = ((void *)0); [L588] return list; [L629] struct node *list = create_sll(&p1, &p2); [L631] \read(*p1) [L631] \read(*p2) [L615] COND FALSE !(!(beg)) [L616] COND FALSE !(!(end)) [L617] EXPR beg->next [L617] beg = beg->next [L617] COND TRUE end != beg [L618] COND TRUE !(beg) [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 20 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 964 SDslu, 1643 SDs, 0 SdLazy, 730 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred 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, 3 MinimizatonAttempts, 190 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 23932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...