./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/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 0.1.24-678e011 [2019-11-20 04:29:57,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:29:57,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:29:57,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:29:57,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:29:57,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:29:57,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:29:57,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:29:57,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:29:57,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:29:57,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:29:57,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:29:57,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:29:57,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:29:57,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:29:57,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:29:57,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:29:57,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:29:57,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:29:57,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:29:57,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:29:57,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:29:57,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:29:57,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:29:57,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:29:57,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:29:57,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:29:57,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:29:57,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:29:57,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:29:57,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:29:57,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:29:57,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:29:57,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:29:57,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:29:57,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:29:57,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:29:57,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:29:57,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:29:57,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:29:57,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:29:57,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:29:57,614 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:29:57,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:29:57,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:29:57,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:29:57,616 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:29:57,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:29:57,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:29:57,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:29:57,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:29:57,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:29:57,618 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:29:57,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:29:57,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:29:57,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:29:57,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:29:57,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:29:57,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:29:57,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:29:57,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:29:57,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:29:57,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:29:57,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:29:57,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:29:57,620 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_672dc995-af36-4b35-b943-dde3476d0b9d/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 [2019-11-20 04:29:57,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:29:57,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:29:57,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:29:57,781 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:29:57,782 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:29:57,783 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-11-20 04:29:57,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/data/b52f5b51f/2f1e846df96646d88e853fe1b0024748/FLAGa6bb44195 [2019-11-20 04:29:58,286 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:29:58,286 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-11-20 04:29:58,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/data/b52f5b51f/2f1e846df96646d88e853fe1b0024748/FLAGa6bb44195 [2019-11-20 04:29:58,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/data/b52f5b51f/2f1e846df96646d88e853fe1b0024748 [2019-11-20 04:29:58,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:29:58,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:29:58,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:29:58,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:29:58,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:29:58,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4431829a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58, skipping insertion in model container [2019-11-20 04:29:58,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:29:58,366 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:29:58,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:29:58,719 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:29:58,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:29:58,811 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:29:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58 WrapperNode [2019-11-20 04:29:58,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:29:58,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:29:58,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:29:58,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:29:58,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:29:58,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:29:58,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:29:58,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:29:58,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... [2019-11-20 04:29:58,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:29:58,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:29:58,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:29:58,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:29:58,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:29:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 04:29:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:29:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 04:29:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 04:29:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:29:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 04:29:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:29:58,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:29:59,806 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:29:59,806 INFO L285 CfgBuilder]: Removed 137 assume(true) statements. [2019-11-20 04:29:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:59 BoogieIcfgContainer [2019-11-20 04:29:59,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:29:59,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:29:59,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:29:59,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:29:59,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:29:58" (1/3) ... [2019-11-20 04:29:59,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79032f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:29:59, skipping insertion in model container [2019-11-20 04:29:59,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:58" (2/3) ... [2019-11-20 04:29:59,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79032f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:29:59, skipping insertion in model container [2019-11-20 04:29:59,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:59" (3/3) ... [2019-11-20 04:29:59,816 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2019-11-20 04:29:59,825 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:29:59,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-20 04:29:59,843 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-20 04:29:59,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:29:59,867 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:29:59,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:29:59,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:29:59,868 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:29:59,868 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:29:59,868 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:29:59,869 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:29:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2019-11-20 04:29:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 04:29:59,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:29:59,896 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:29:59,897 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:29:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash 586891724, now seen corresponding path program 1 times [2019-11-20 04:29:59,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:59,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703625986] [2019-11-20 04:29:59,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:30:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:00,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703625986] [2019-11-20 04:30:00,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:00,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:30:00,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223064155] [2019-11-20 04:30:00,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:30:00,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:30:00,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:30:00,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:30:00,059 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2019-11-20 04:30:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:00,091 INFO L93 Difference]: Finished difference Result 292 states and 486 transitions. [2019-11-20 04:30:00,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:30:00,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-20 04:30:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:00,102 INFO L225 Difference]: With dead ends: 292 [2019-11-20 04:30:00,104 INFO L226 Difference]: Without dead ends: 141 [2019-11-20 04:30:00,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:30:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-20 04:30:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-11-20 04:30:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-20 04:30:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2019-11-20 04:30:00,182 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 13 [2019-11-20 04:30:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:00,183 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2019-11-20 04:30:00,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:30:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2019-11-20 04:30:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 04:30:00,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:00,185 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:00,185 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:30:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1788456629, now seen corresponding path program 1 times [2019-11-20 04:30:00,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:30:00,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011207346] [2019-11-20 04:30:00,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:30:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:00,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011207346] [2019-11-20 04:30:00,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:00,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-20 04:30:00,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463274483] [2019-11-20 04:30:00,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 04:30:00,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:30:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:30:00,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:30:00,742 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 11 states. [2019-11-20 04:30:01,437 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-11-20 04:30:01,646 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-11-20 04:30:01,833 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-11-20 04:30:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:02,389 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2019-11-20 04:30:02,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:30:02,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2019-11-20 04:30:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:02,391 INFO L225 Difference]: With dead ends: 234 [2019-11-20 04:30:02,391 INFO L226 Difference]: Without dead ends: 230 [2019-11-20 04:30:02,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2019-11-20 04:30:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-11-20 04:30:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 144. [2019-11-20 04:30:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 04:30:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2019-11-20 04:30:02,406 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 24 [2019-11-20 04:30:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:02,406 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2019-11-20 04:30:02,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 04:30:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2019-11-20 04:30:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 04:30:02,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:02,407 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:02,408 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:30:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 720092185, now seen corresponding path program 1 times [2019-11-20 04:30:02,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:30:02,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51390270] [2019-11-20 04:30:02,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:30:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:02,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51390270] [2019-11-20 04:30:02,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:02,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-20 04:30:02,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850691691] [2019-11-20 04:30:02,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 04:30:02,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:30:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 04:30:02,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-20 04:30:02,687 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 12 states. [2019-11-20 04:30:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:03,445 INFO L93 Difference]: Finished difference Result 252 states and 273 transitions. [2019-11-20 04:30:03,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 04:30:03,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2019-11-20 04:30:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:03,447 INFO L225 Difference]: With dead ends: 252 [2019-11-20 04:30:03,447 INFO L226 Difference]: Without dead ends: 248 [2019-11-20 04:30:03,448 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2019-11-20 04:30:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-11-20 04:30:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 144. [2019-11-20 04:30:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 04:30:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2019-11-20 04:30:03,463 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 26 [2019-11-20 04:30:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:03,463 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2019-11-20 04:30:03,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 04:30:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2019-11-20 04:30:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 04:30:03,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:03,465 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:03,465 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:30:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:03,465 INFO L82 PathProgramCache]: Analyzing trace with hash 586745765, now seen corresponding path program 1 times [2019-11-20 04:30:03,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:30:03,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492659748] [2019-11-20 04:30:03,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:30:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:30:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:30:03,582 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:30:03,582 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:30:03,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:30:03 BoogieIcfgContainer [2019-11-20 04:30:03,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:30:03,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:30:03,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:30:03,627 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:30:03,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:59" (3/4) ... [2019-11-20 04:30:03,630 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:30:03,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_672dc995-af36-4b35-b943-dde3476d0b9d/bin/uautomizer/witness.graphml [2019-11-20 04:30:03,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:30:03,702 INFO L168 Benchmark]: Toolchain (without parser) took 5385.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -243.6 MB). Peak memory consumption was 214.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,703 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:30:03,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.49 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: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,704 INFO L168 Benchmark]: Boogie Preprocessor took 72.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,705 INFO L168 Benchmark]: RCFGBuilder took 867.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,705 INFO L168 Benchmark]: TraceAbstraction took 3818.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.1 MB in the end (delta: 183.7 MB). Peak memory consumption was 183.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,706 INFO L168 Benchmark]: Witness Printer took 74.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 870.1 MB in the beginning and 1.2 GB in the end (delta: -312.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:03,709 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 493.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.49 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: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 867.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3818.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.1 MB in the end (delta: 183.7 MB). Peak memory consumption was 183.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 870.1 MB in the beginning and 1.2 GB in the end (delta: -312.8 MB). Peak memory consumption was 1.7 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: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 812 SDslu, 1460 SDs, 0 SdLazy, 687 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.7s 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 22738 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...