./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.0-5485861 [2020-10-25 22:06:56,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:06:56,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:06:56,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:06:56,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:06:56,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:06:56,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:06:56,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:06:56,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:06:56,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:06:56,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:06:56,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:06:56,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:06:56,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:06:56,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:06:56,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:06:56,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:06:56,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:06:56,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:06:56,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:06:56,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:06:56,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:06:56,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:06:56,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:06:56,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:06:56,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:06:56,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:06:56,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:06:56,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:06:56,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:06:56,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:06:56,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:06:56,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:06:56,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:06:56,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:06:56,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:06:56,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:06:56,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:06:56,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:06:56,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:06:56,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:06:56,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:06:56,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:06:56,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:06:56,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:06:56,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:06:56,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:06:56,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:06:56,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:06:56,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:06:56,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:06:56,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:06:56,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:06:56,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:06:56,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:06:56,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:06:56,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:06:56,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:06:56,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:06:56,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:06:56,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:06:56,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:06:56,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:06:56,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:06:56,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:06:56,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:06:56,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:06:56,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:06:56,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:06:56,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:06:56,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:06:56,585 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635ef9d2e243ceee348a174080644f4e80f3ae61 [2020-10-25 22:06:56,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:06:57,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:06:57,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:06:57,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:06:57,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:06:57,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-10-25 22:06:57,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e2befca/d9defa6d78c5474b95513a0550e68163/FLAG689e55225 [2020-10-25 22:06:57,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:06:57,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-10-25 22:06:57,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e2befca/d9defa6d78c5474b95513a0550e68163/FLAG689e55225 [2020-10-25 22:06:58,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e2befca/d9defa6d78c5474b95513a0550e68163 [2020-10-25 22:06:58,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:06:58,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:06:58,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:58,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:06:58,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:06:58,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a2f39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58, skipping insertion in model container [2020-10-25 22:06:58,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:06:58,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:06:58,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:58,635 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:06:58,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:58,806 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:06:58,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58 WrapperNode [2020-10-25 22:06:58,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:58,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:58,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:06:58,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:06:58,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:58,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:06:58,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:06:58,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:06:58,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... [2020-10-25 22:06:58,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:06:58,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:06:58,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:06:58,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:06:58,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:06:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:06:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:06:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:06:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:06:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:06:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:06:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:06:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:06:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:06:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:06:59,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:06:59,792 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-25 22:06:59,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:59 BoogieIcfgContainer [2020-10-25 22:06:59,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:06:59,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:06:59,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:06:59,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:06:59,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:06:58" (1/3) ... [2020-10-25 22:06:59,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df0f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:59, skipping insertion in model container [2020-10-25 22:06:59,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:58" (2/3) ... [2020-10-25 22:06:59,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df0f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:59, skipping insertion in model container [2020-10-25 22:06:59,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:59" (3/3) ... [2020-10-25 22:06:59,803 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-10-25 22:06:59,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:06:59,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-25 22:06:59,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-25 22:06:59,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:06:59,875 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:06:59,875 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:06:59,875 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:06:59,875 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:06:59,875 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:06:59,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:06:59,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:06:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-25 22:06:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:06:59,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:59,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:59,899 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]=== [2020-10-25 22:06:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:59,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1824948254, now seen corresponding path program 1 times [2020-10-25 22:06:59,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:59,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781526733] [2020-10-25 22:06:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:07:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:07:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:07:00,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781526733] [2020-10-25 22:07:00,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:07:00,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:07:00,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170144546] [2020-10-25 22:07:00,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:07:00,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:07:00,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:07:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:07:00,101 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2020-10-25 22:07:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:07:00,129 INFO L93 Difference]: Finished difference Result 124 states and 202 transitions. [2020-10-25 22:07:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:07:00,131 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-25 22:07:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:07:00,139 INFO L225 Difference]: With dead ends: 124 [2020-10-25 22:07:00,140 INFO L226 Difference]: Without dead ends: 56 [2020-10-25 22:07:00,143 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 [2020-10-25 22:07:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-25 22:07:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-25 22:07:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-25 22:07:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-25 22:07:00,198 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 7 [2020-10-25 22:07:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:07:00,199 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-25 22:07:00,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:07:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-25 22:07:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:07:00,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:07:00,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:07:00,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:07:00,201 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]=== [2020-10-25 22:07:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:07:00,202 INFO L82 PathProgramCache]: Analyzing trace with hash 178060237, now seen corresponding path program 1 times [2020-10-25 22:07:00,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:07:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594164758] [2020-10-25 22:07:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:07:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:07:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:07:00,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594164758] [2020-10-25 22:07:00,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:07:00,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:07:00,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844034132] [2020-10-25 22:07:00,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:07:00,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:07:00,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:07:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:07:00,278 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 3 states. [2020-10-25 22:07:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:07:00,348 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-10-25 22:07:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:07:00,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-25 22:07:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:07:00,350 INFO L225 Difference]: With dead ends: 115 [2020-10-25 22:07:00,350 INFO L226 Difference]: Without dead ends: 61 [2020-10-25 22:07:00,352 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 [2020-10-25 22:07:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-25 22:07:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-25 22:07:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-25 22:07:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-25 22:07:00,362 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 8 [2020-10-25 22:07:00,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:07:00,363 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-25 22:07:00,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:07:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-25 22:07:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:07:00,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:07:00,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:07:00,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:07:00,365 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]=== [2020-10-25 22:07:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:07:00,366 INFO L82 PathProgramCache]: Analyzing trace with hash 858016664, now seen corresponding path program 1 times [2020-10-25 22:07:00,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:07:00,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400730317] [2020-10-25 22:07:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:07:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:07:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 22:07:00,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400730317] [2020-10-25 22:07:00,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:07:00,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:07:00,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543604698] [2020-10-25 22:07:00,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:07:00,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:07:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:07:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:07:00,481 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 4 states. [2020-10-25 22:07:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:07:00,654 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-25 22:07:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:07:00,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-25 22:07:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:07:00,657 INFO L225 Difference]: With dead ends: 97 [2020-10-25 22:07:00,657 INFO L226 Difference]: Without dead ends: 94 [2020-10-25 22:07:00,658 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 [2020-10-25 22:07:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-25 22:07:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 57. [2020-10-25 22:07:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-25 22:07:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-25 22:07:00,671 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 12 [2020-10-25 22:07:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:07:00,672 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-25 22:07:00,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:07:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-25 22:07:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 22:07:00,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:07:00,674 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] [2020-10-25 22:07:00,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:07:00,675 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]=== [2020-10-25 22:07:00,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:07:00,677 INFO L82 PathProgramCache]: Analyzing trace with hash 469748449, now seen corresponding path program 1 times [2020-10-25 22:07:00,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:07:00,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526022264] [2020-10-25 22:07:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:07:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:07:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 22:07:00,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526022264] [2020-10-25 22:07:00,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:07:00,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:07:00,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31040186] [2020-10-25 22:07:00,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:07:00,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:07:00,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:07:00,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:07:00,846 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2020-10-25 22:07:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:07:00,989 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-10-25 22:07:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:07:00,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 22:07:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:07:00,991 INFO L225 Difference]: With dead ends: 103 [2020-10-25 22:07:00,992 INFO L226 Difference]: Without dead ends: 63 [2020-10-25 22:07:00,993 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 [2020-10-25 22:07:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-25 22:07:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-25 22:07:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-25 22:07:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-25 22:07:01,003 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 22 [2020-10-25 22:07:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:07:01,003 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-25 22:07:01,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:07:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-25 22:07:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 22:07:01,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:07:01,005 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] [2020-10-25 22:07:01,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:07:01,006 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]=== [2020-10-25 22:07:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:07:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -210309921, now seen corresponding path program 1 times [2020-10-25 22:07:01,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:07:01,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199629091] [2020-10-25 22:07:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:07:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:07:01,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:07:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:07:01,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:07:01,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:07:01,228 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:07:01,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 22:07:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:07:01 BoogieIcfgContainer [2020-10-25 22:07:01,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:07:01,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:07:01,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:07:01,309 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:07:01,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:59" (3/4) ... [2020-10-25 22:07:01,314 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:07:01,404 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:07:01,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:07:01,408 INFO L168 Benchmark]: Toolchain (without parser) took 3279.08 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 22.2 MB in the beginning and 39.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,408 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory is still 29.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:07:01,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.06 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.7 MB in the end (delta: 874.1 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.31 ms. Allocated memory is still 46.1 MB. Free memory was 20.5 MB in the beginning and 18.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,417 INFO L168 Benchmark]: Boogie Preprocessor took 52.86 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 18.3 MB in the beginning and 39.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,420 INFO L168 Benchmark]: RCFGBuilder took 871.99 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 24.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,422 INFO L168 Benchmark]: TraceAbstraction took 1512.79 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 42.3 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:07:01,423 INFO L168 Benchmark]: Witness Printer took 95.38 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 39.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:07:01,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory is still 29.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 673.06 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.7 MB in the end (delta: 874.1 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.31 ms. Allocated memory is still 46.1 MB. Free memory was 20.5 MB in the beginning and 18.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.86 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 18.3 MB in the beginning and 39.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 871.99 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 24.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1512.79 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 42.3 MB in the end (delta: -18.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 95.38 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 39.6 MB in the end (delta: 2.7 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: 0.4s, 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, 0.2s 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, 0.2s 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...