./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635ef9d2e243ceee348a174080644f4e80f3ae61 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-29 22:52:51,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:52:51,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:52:51,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:52:51,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:52:51,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:52:51,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:52:51,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:52:51,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:52:51,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:52:51,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:52:51,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:52:51,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:52:51,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:52:51,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:52:51,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:52:51,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:52:51,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:52:51,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:52:51,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:52:51,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:52:51,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:52:51,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:52:51,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:52:51,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:52:51,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:52:51,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:52:51,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:52:51,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:52:51,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:52:51,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:52:51,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:52:51,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:52:51,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:52:51,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:52:51,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:52:51,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:52:51,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:52:51,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:52:51,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:52:51,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:52:51,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:52:51,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:52:51,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:52:51,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:52:51,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:52:51,709 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:52:51,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:52:51,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:52:51,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:52:51,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:52:51,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:52:51,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:52:51,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:52:51,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:52:51,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:52:51,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:52:51,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:52:51,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:52:51,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:52:51,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:52:51,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:52:51,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:52:51,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:52:51,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:52:51,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:52:51,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:52:51,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:52:51,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:52:51,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:52:51,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:52:51,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635ef9d2e243ceee348a174080644f4e80f3ae61 [2020-11-29 22:52:52,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:52:52,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:52:52,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:52:52,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:52:52,086 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:52:52,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-11-29 22:52:52,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/data/530d2d94b/2ead1abb0c4648c49b9ca990b0521a33/FLAG25139f580 [2020-11-29 22:52:52,825 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:52:52,826 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-11-29 22:52:52,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/data/530d2d94b/2ead1abb0c4648c49b9ca990b0521a33/FLAG25139f580 [2020-11-29 22:52:53,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/data/530d2d94b/2ead1abb0c4648c49b9ca990b0521a33 [2020-11-29 22:52:53,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:52:53,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:52:53,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:53,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:52:53,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:52:53,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2473e702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53, skipping insertion in model container [2020-11-29 22:52:53,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:52:53,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:52:53,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:53,433 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:52:53,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:53,611 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:52:53,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53 WrapperNode [2020-11-29 22:52:53,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:53,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:53,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:52:53,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:52:53,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:53,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:52:53,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:52:53,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:52:53,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... [2020-11-29 22:52:53,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:52:53,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:52:53,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:52:53,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:52:53,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/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 [2020-11-29 22:52:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:52:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:52:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:52:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 22:52:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:52:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 22:52:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:52:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:52:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:52:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:52:54,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:52:54,604 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-29 22:52:54,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:54 BoogieIcfgContainer [2020-11-29 22:52:54,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:52:54,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:52:54,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:52:54,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:52:54,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:52:53" (1/3) ... [2020-11-29 22:52:54,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48214960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:54, skipping insertion in model container [2020-11-29 22:52:54,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:53" (2/3) ... [2020-11-29 22:52:54,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48214960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:54, skipping insertion in model container [2020-11-29 22:52:54,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:54" (3/3) ... [2020-11-29 22:52:54,616 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-11-29 22:52:54,633 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:52:54,639 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:52:54,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:52:54,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:52:54,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:52:54,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:52:54,680 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:52:54,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:52:54,680 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:52:54,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:52:54,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:52:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-11-29 22:52:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:52:54,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:54,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:54,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1824948254, now seen corresponding path program 1 times [2020-11-29 22:52:54,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:54,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278115530] [2020-11-29 22:52:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:54,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278115530] [2020-11-29 22:52:54,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:54,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:52:54,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26767800] [2020-11-29 22:52:54,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:52:54,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:54,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:52:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:52:54,902 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2020-11-29 22:52:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:54,925 INFO L93 Difference]: Finished difference Result 124 states and 202 transitions. [2020-11-29 22:52:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:52:54,927 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:52:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:54,936 INFO L225 Difference]: With dead ends: 124 [2020-11-29 22:52:54,936 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 22:52:54,940 INFO L677 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 [2020-11-29 22:52:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 22:52:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 22:52:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:52:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-11-29 22:52:54,979 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 7 [2020-11-29 22:52:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:54,980 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-11-29 22:52:54,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:52:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-11-29 22:52:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:52:54,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:54,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:54,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:52:54,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:54,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash 178060237, now seen corresponding path program 1 times [2020-11-29 22:52:54,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:54,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27655759] [2020-11-29 22:52:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:55,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27655759] [2020-11-29 22:52:55,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:55,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:52:55,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028235337] [2020-11-29 22:52:55,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:52:55,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:55,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:52:55,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:52:55,051 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 3 states. [2020-11-29 22:52:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:55,130 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-11-29 22:52:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:52:55,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 22:52:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:55,133 INFO L225 Difference]: With dead ends: 115 [2020-11-29 22:52:55,133 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 22:52:55,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:52:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 22:52:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-11-29 22:52:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 22:52:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-11-29 22:52:55,150 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 8 [2020-11-29 22:52:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:55,150 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-11-29 22:52:55,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:52:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-11-29 22:52:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:52:55,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:55,154 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:55,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:52:55,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash 858016664, now seen corresponding path program 1 times [2020-11-29 22:52:55,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:55,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567620249] [2020-11-29 22:52:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:52:55,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567620249] [2020-11-29 22:52:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:55,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:55,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479266828] [2020-11-29 22:52:55,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:55,313 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 4 states. [2020-11-29 22:52:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:55,528 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-11-29 22:52:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:55,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:52:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:55,530 INFO L225 Difference]: With dead ends: 97 [2020-11-29 22:52:55,530 INFO L226 Difference]: Without dead ends: 94 [2020-11-29 22:52:55,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-29 22:52:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 57. [2020-11-29 22:52:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 22:52:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-11-29 22:52:55,540 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 12 [2020-11-29 22:52:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:55,541 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-11-29 22:52:55,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-11-29 22:52:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:52:55,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:55,542 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:55,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:52:55,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 469748449, now seen corresponding path program 1 times [2020-11-29 22:52:55,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:55,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118772849] [2020-11-29 22:52:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:52:55,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118772849] [2020-11-29 22:52:55,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:55,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:52:55,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151524260] [2020-11-29 22:52:55,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:52:55,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:55,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:52:55,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:55,653 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2020-11-29 22:52:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:55,846 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-11-29 22:52:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:52:55,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 22:52:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:55,849 INFO L225 Difference]: With dead ends: 103 [2020-11-29 22:52:55,850 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:52:55,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:52:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:52:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-11-29 22:52:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 22:52:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-11-29 22:52:55,869 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 22 [2020-11-29 22:52:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:55,870 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-11-29 22:52:55,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:52:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-11-29 22:52:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:52:55,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:55,872 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:55,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:52:55,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:55,875 INFO L82 PathProgramCache]: Analyzing trace with hash -210309921, now seen corresponding path program 1 times [2020-11-29 22:52:55,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:55,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633855139] [2020-11-29 22:52:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:52:55,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:52:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:52:56,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:52:56,051 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:52:56,052 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:52:56,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:52:56,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:52:56 BoogieIcfgContainer [2020-11-29 22:52:56,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:52:56,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:52:56,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:52:56,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:52:56,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:54" (3/4) ... [2020-11-29 22:52:56,114 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:52:56,177 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4b741b3-6897-40b1-9e63-d1b99571a42a/bin/uautomizer/witness.graphml [2020-11-29 22:52:56,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:52:56,179 INFO L168 Benchmark]: Toolchain (without parser) took 3128.50 ms. Allocated memory is still 115.3 MB. Free memory was 93.2 MB in the beginning and 47.7 MB in the end (delta: 45.5 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,180 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 61.2 MB in the end (delta: 57.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:52:56,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.09 ms. Allocated memory is still 115.3 MB. Free memory was 92.9 MB in the beginning and 70.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.92 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 68.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,182 INFO L168 Benchmark]: Boogie Preprocessor took 85.86 ms. Allocated memory is still 115.3 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,182 INFO L168 Benchmark]: RCFGBuilder took 801.77 ms. Allocated memory is still 115.3 MB. Free memory was 66.2 MB in the beginning and 75.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,183 INFO L168 Benchmark]: TraceAbstraction took 1501.54 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 50.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,184 INFO L168 Benchmark]: Witness Printer took 66.78 ms. Allocated memory is still 115.3 MB. Free memory was 50.5 MB in the beginning and 47.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:56,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 61.2 MB in the end (delta: 57.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 561.09 ms. Allocated memory is still 115.3 MB. Free memory was 92.9 MB in the beginning and 70.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.92 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 68.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.86 ms. Allocated memory is still 115.3 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 801.77 ms. Allocated memory is still 115.3 MB. Free memory was 66.2 MB in the beginning and 75.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1501.54 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 50.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * Witness Printer took 66.78 ms. Allocated memory is still 115.3 MB. Free memory was 50.5 MB in the beginning and 47.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 231 SDtfs, 185 SDslu, 144 SDs, 0 SdLazy, 94 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...