./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/merge_sort-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/heap-manipulation/merge_sort-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 54165abed718b8d39f88748583b76365fb540324 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:02:18,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:02:18,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:02:18,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:02:18,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:02:18,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:02:18,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:02:18,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:02:18,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:02:18,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:02:18,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:02:18,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:02:18,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:02:18,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:02:18,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:02:18,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:02:18,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:02:18,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:02:18,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:02:18,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:02:18,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:02:18,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:02:18,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:02:18,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:02:18,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:02:18,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:02:18,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:02:18,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:02:18,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:02:18,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:02:18,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:02:18,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:02:18,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:02:18,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:02:18,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:02:18,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:02:18,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:02:18,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:02:18,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:02:18,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:02:18,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:02:18,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:02:18,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:02:18,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:02:18,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:02:18,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:02:18,658 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:02:18,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:02:18,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:02:18,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:02:18,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:02:18,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:02:18,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:02:18,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:02:18,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:02:18,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:02:18,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:02:18,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:02:18,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:02:18,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:02:18,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:02:18,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:02:18,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:02:18,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:02:18,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:02:18,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:02:18,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:02:18,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:02:18,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:02:18,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:02:18,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:02:18,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54165abed718b8d39f88748583b76365fb540324 [2020-10-25 22:02:19,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:02:19,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:02:19,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:02:19,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:02:19,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:02:19,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-25 22:02:19,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c22a942/e5165fe4c2724f30b9b622913c1c51f0/FLAG4ed462272 [2020-10-25 22:02:19,820 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:02:19,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-25 22:02:19,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c22a942/e5165fe4c2724f30b9b622913c1c51f0/FLAG4ed462272 [2020-10-25 22:02:20,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c22a942/e5165fe4c2724f30b9b622913c1c51f0 [2020-10-25 22:02:20,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:02:20,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:02:20,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:02:20,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:02:20,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:02:20,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6741410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20, skipping insertion in model container [2020-10-25 22:02:20,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:02:20,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:02:20,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:02:20,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:02:20,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:02:20,801 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:02:20,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20 WrapperNode [2020-10-25 22:02:20,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:02:20,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:02:20,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:02:20,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:02:20,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:02:20,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:02:20,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:02:20,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:02:20,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (1/1) ... [2020-10-25 22:02:20,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:02:20,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:02:20,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:02:20,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:02:20,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (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 22:02:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:02:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:02:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:02:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:02:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:02:21,834 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:02:21,835 INFO L298 CfgBuilder]: Removed 101 assume(true) statements. [2020-10-25 22:02:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:21 BoogieIcfgContainer [2020-10-25 22:02:21,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:02:21,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:02:21,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:02:21,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:02:21,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:02:20" (1/3) ... [2020-10-25 22:02:21,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeefb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:02:21, skipping insertion in model container [2020-10-25 22:02:21,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:20" (2/3) ... [2020-10-25 22:02:21,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeefb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:02:21, skipping insertion in model container [2020-10-25 22:02:21,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:21" (3/3) ... [2020-10-25 22:02:21,846 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-10-25 22:02:21,862 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:02:21,866 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-10-25 22:02:21,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-10-25 22:02:21,929 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:02:21,929 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:02:21,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:02:21,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:02:21,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:02:21,930 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:02:21,930 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:02:21,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:02:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-25 22:02:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:02:21,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:21,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:21,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash 801802348, now seen corresponding path program 1 times [2020-10-25 22:02:21,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:21,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267359368] [2020-10-25 22:02:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:22,145 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 22:02:22,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267359368] [2020-10-25 22:02:22,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:22,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:02:22,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612519421] [2020-10-25 22:02:22,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:02:22,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:02:22,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:02:22,174 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 2 states. [2020-10-25 22:02:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:22,223 INFO L93 Difference]: Finished difference Result 261 states and 407 transitions. [2020-10-25 22:02:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:02:22,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-25 22:02:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:22,236 INFO L225 Difference]: With dead ends: 261 [2020-10-25 22:02:22,236 INFO L226 Difference]: Without dead ends: 118 [2020-10-25 22:02:22,240 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 22:02:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-25 22:02:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-10-25 22:02:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-25 22:02:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-10-25 22:02:22,289 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 8 [2020-10-25 22:02:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-10-25 22:02:22,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:02:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-10-25 22:02:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:02:22,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:22,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:22,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:02:22,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:22,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1230623071, now seen corresponding path program 1 times [2020-10-25 22:02:22,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:22,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950808484] [2020-10-25 22:02:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:22,347 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 22:02:22,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950808484] [2020-10-25 22:02:22,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:22,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:02:22,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913115874] [2020-10-25 22:02:22,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:02:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:02:22,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:02:22,351 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 3 states. [2020-10-25 22:02:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:22,383 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions. [2020-10-25 22:02:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:02:22,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-25 22:02:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:22,385 INFO L225 Difference]: With dead ends: 234 [2020-10-25 22:02:22,385 INFO L226 Difference]: Without dead ends: 124 [2020-10-25 22:02:22,387 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 22:02:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-25 22:02:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-10-25 22:02:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-25 22:02:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2020-10-25 22:02:22,399 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 9 [2020-10-25 22:02:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:22,400 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2020-10-25 22:02:22,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:02:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-10-25 22:02:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:02:22,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:22,401 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:22,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:02:22,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2072993674, now seen corresponding path program 1 times [2020-10-25 22:02:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:22,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235999230] [2020-10-25 22:02:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:22,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235999230] [2020-10-25 22:02:22,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:22,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:02:22,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285445835] [2020-10-25 22:02:22,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:02:22,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:22,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:02:22,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:02:22,527 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 5 states. [2020-10-25 22:02:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:22,695 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2020-10-25 22:02:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:02:22,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-25 22:02:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:22,699 INFO L225 Difference]: With dead ends: 319 [2020-10-25 22:02:22,699 INFO L226 Difference]: Without dead ends: 307 [2020-10-25 22:02:22,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:02:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-25 22:02:22,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 120. [2020-10-25 22:02:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-25 22:02:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-10-25 22:02:22,714 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 15 [2020-10-25 22:02:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:22,715 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-10-25 22:02:22,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:02:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-10-25 22:02:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 22:02:22,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:22,716 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 22:02:22,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:02:22,717 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:22,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:22,717 INFO L82 PathProgramCache]: Analyzing trace with hash -63750243, now seen corresponding path program 1 times [2020-10-25 22:02:22,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:22,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593409168] [2020-10-25 22:02:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:22,852 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 22:02:22,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593409168] [2020-10-25 22:02:22,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:22,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:02:22,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772847986] [2020-10-25 22:02:22,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:02:22,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:02:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:02:22,856 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 5 states. [2020-10-25 22:02:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:23,093 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2020-10-25 22:02:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:02:23,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 22:02:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:23,096 INFO L225 Difference]: With dead ends: 157 [2020-10-25 22:02:23,096 INFO L226 Difference]: Without dead ends: 153 [2020-10-25 22:02:23,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:02:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-25 22:02:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2020-10-25 22:02:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-25 22:02:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-10-25 22:02:23,108 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 22 [2020-10-25 22:02:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:23,108 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-10-25 22:02:23,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:02:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-10-25 22:02:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 22:02:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:23,110 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 22:02:23,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:02:23,110 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1036064776, now seen corresponding path program 1 times [2020-10-25 22:02:23,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:23,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268081984] [2020-10-25 22:02:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:23,185 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 22:02:23,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268081984] [2020-10-25 22:02:23,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:23,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:02:23,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993272173] [2020-10-25 22:02:23,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:02:23,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:23,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:02:23,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:02:23,196 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 5 states. [2020-10-25 22:02:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:23,362 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-10-25 22:02:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:02:23,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 22:02:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:23,363 INFO L225 Difference]: With dead ends: 116 [2020-10-25 22:02:23,363 INFO L226 Difference]: Without dead ends: 112 [2020-10-25 22:02:23,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:02:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-25 22:02:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-25 22:02:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-25 22:02:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-10-25 22:02:23,373 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 22 [2020-10-25 22:02:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:23,374 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-10-25 22:02:23,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:02:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-10-25 22:02:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 22:02:23,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:23,376 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, 1, 1, 1] [2020-10-25 22:02:23,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 22:02:23,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:23,377 INFO L82 PathProgramCache]: Analyzing trace with hash -792261703, now seen corresponding path program 1 times [2020-10-25 22:02:23,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:23,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000164018] [2020-10-25 22:02:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:23,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000164018] [2020-10-25 22:02:23,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:23,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 22:02:23,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233768033] [2020-10-25 22:02:23,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 22:02:23,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 22:02:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:02:23,468 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 7 states. [2020-10-25 22:02:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:23,772 INFO L93 Difference]: Finished difference Result 262 states and 282 transitions. [2020-10-25 22:02:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:02:23,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-25 22:02:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:23,775 INFO L225 Difference]: With dead ends: 262 [2020-10-25 22:02:23,775 INFO L226 Difference]: Without dead ends: 258 [2020-10-25 22:02:23,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:02:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-25 22:02:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 118. [2020-10-25 22:02:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-25 22:02:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-10-25 22:02:23,786 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 25 [2020-10-25 22:02:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:23,786 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-10-25 22:02:23,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 22:02:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-10-25 22:02:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 22:02:23,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:23,788 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, 1, 1, 1] [2020-10-25 22:02:23,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 22:02:23,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1786321243, now seen corresponding path program 1 times [2020-10-25 22:02:23,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:23,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478773845] [2020-10-25 22:02:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:23,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478773845] [2020-10-25 22:02:23,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:23,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 22:02:23,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474667619] [2020-10-25 22:02:23,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 22:02:23,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 22:02:23,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:02:23,882 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 7 states. [2020-10-25 22:02:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:24,156 INFO L93 Difference]: Finished difference Result 258 states and 278 transitions. [2020-10-25 22:02:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:02:24,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-25 22:02:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:24,158 INFO L225 Difference]: With dead ends: 258 [2020-10-25 22:02:24,158 INFO L226 Difference]: Without dead ends: 254 [2020-10-25 22:02:24,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:02:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-25 22:02:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 124. [2020-10-25 22:02:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-25 22:02:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2020-10-25 22:02:24,178 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 25 [2020-10-25 22:02:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:24,178 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2020-10-25 22:02:24,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 22:02:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2020-10-25 22:02:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:02:24,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:24,180 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, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:24,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 22:02:24,180 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1407392071, now seen corresponding path program 1 times [2020-10-25 22:02:24,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:24,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035143185] [2020-10-25 22:02:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:02:24,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:02:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:02:24,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:02:24,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:02:24,280 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:02:24,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 22:02:24,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:02:24 BoogieIcfgContainer [2020-10-25 22:02:24,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:02:24,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:02:24,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:02:24,349 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:02:24,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:21" (3/4) ... [2020-10-25 22:02:24,352 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:02:24,426 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:02:24,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:02:24,429 INFO L168 Benchmark]: Toolchain (without parser) took 4313.63 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.4 MB in the beginning and 52.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,429 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:02:24,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.40 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 36.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,431 INFO L168 Benchmark]: Boogie Preprocessor took 50.55 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 33.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,432 INFO L168 Benchmark]: RCFGBuilder took 916.31 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 28.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,433 INFO L168 Benchmark]: TraceAbstraction took 2509.26 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 55.5 MB in the end (delta: -27.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:02:24,433 INFO L168 Benchmark]: Witness Printer took 77.84 ms. Allocated memory is still 86.0 MB. Free memory was 55.5 MB in the beginning and 52.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:24,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 679.40 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 36.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.55 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 33.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 916.31 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 28.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2509.26 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 55.5 MB in the end (delta: -27.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 77.84 ms. Allocated memory is still 86.0 MB. Free memory was 55.5 MB in the beginning and 52.7 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "merge_sort-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 138 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 764 SDtfs, 2202 SDslu, 1267 SDs, 0 SdLazy, 504 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 498 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 11223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...