./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/array-fpi/ifeqn3f.c -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 c3764edd0ff82cc2ff392719542cb80230c47723 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:12:34,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:12:34,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:12:34,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:12:34,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:12:34,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:12:34,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:12:34,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:12:34,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:12:34,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:12:34,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:12:34,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:12:34,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:12:34,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:12:34,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:12:34,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:12:34,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:12:34,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:12:34,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:12:34,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:12:34,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:12:34,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:12:34,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:12:34,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:12:34,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:12:34,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:12:34,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:12:34,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:12:34,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:12:34,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:12:34,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:12:34,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:12:34,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:12:34,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:12:34,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:12:34,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:12:34,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:12:34,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:12:34,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:12:34,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:12:34,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:12:34,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:12:34,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:12:34,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:12:34,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:12:34,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:12:34,851 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:12:34,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:12:34,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:12:34,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:12:34,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:12:34,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:12:34,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:12:34,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:12:34,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:12:34,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:12:34,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:12:34,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:12:34,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:12:34,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:12:34,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:12:34,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:12:34,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:12:34,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:12:34,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:12:34,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:12:34,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:12:34,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:12:34,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:12:34,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:12:34,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:12:34,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> c3764edd0ff82cc2ff392719542cb80230c47723 [2020-10-19 22:12:35,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:12:35,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:12:35,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:12:35,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:12:35,084 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:12:35,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn3f.c [2020-10-19 22:12:35,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075feeb80/c3fde59f384244b08e1955a2f5356cf5/FLAG2b06677ef [2020-10-19 22:12:35,659 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:12:35,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn3f.c [2020-10-19 22:12:35,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075feeb80/c3fde59f384244b08e1955a2f5356cf5/FLAG2b06677ef [2020-10-19 22:12:36,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075feeb80/c3fde59f384244b08e1955a2f5356cf5 [2020-10-19 22:12:36,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:12:36,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:12:36,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:36,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:12:36,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:12:36,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6b1286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36, skipping insertion in model container [2020-10-19 22:12:36,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:12:36,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:12:36,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:36,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:12:36,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:36,336 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:12:36,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36 WrapperNode [2020-10-19 22:12:36,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:36,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:36,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:12:36,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:12:36,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:36,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:12:36,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:12:36,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:12:36,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (1/1) ... [2020-10-19 22:12:36,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:12:36,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:12:36,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:12:36,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:12:36,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (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 [2020-10-19 22:12:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:12:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:12:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:12:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:12:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:12:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:12:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:12:36,762 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:12:36,762 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-19 22:12:36,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:36 BoogieIcfgContainer [2020-10-19 22:12:36,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:12:36,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:12:36,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:12:36,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:12:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:12:36" (1/3) ... [2020-10-19 22:12:36,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17af1f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:36, skipping insertion in model container [2020-10-19 22:12:36,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:36" (2/3) ... [2020-10-19 22:12:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17af1f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:36, skipping insertion in model container [2020-10-19 22:12:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:36" (3/3) ... [2020-10-19 22:12:36,774 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn3f.c [2020-10-19 22:12:36,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:12:36,796 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:12:36,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:12:36,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:12:36,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:12:36,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:12:36,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:12:36,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:12:36,844 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:12:36,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:12:36,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:12:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 22:12:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:12:36,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:36,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:36,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2020-10-19 22:12:36,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:36,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623849113] [2020-10-19 22:12:36,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:12:37,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623849113] [2020-10-19 22:12:37,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:37,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:12:37,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435881756] [2020-10-19 22:12:37,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:12:37,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:37,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:12:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:12:37,078 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-19 22:12:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:37,103 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2020-10-19 22:12:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:12:37,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-19 22:12:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:37,117 INFO L225 Difference]: With dead ends: 43 [2020-10-19 22:12:37,118 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:12:37,121 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 [2020-10-19 22:12:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:12:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 22:12:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:12:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-19 22:12:37,168 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-10-19 22:12:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:37,169 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-19 22:12:37,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:12:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-19 22:12:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:12:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:37,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:37,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:12:37,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2020-10-19 22:12:37,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919197820] [2020-10-19 22:12:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:12:37,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919197820] [2020-10-19 22:12:37,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:37,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:12:37,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657918571] [2020-10-19 22:12:37,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:12:37,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:12:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:12:37,356 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-10-19 22:12:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:37,485 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-10-19 22:12:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:12:37,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 22:12:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:37,488 INFO L225 Difference]: With dead ends: 45 [2020-10-19 22:12:37,488 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 22:12:37,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:12:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 22:12:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-19 22:12:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 22:12:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-19 22:12:37,502 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-10-19 22:12:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:37,503 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-19 22:12:37,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:12:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-19 22:12:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:12:37,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:37,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:37,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:12:37,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:37,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2020-10-19 22:12:37,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:37,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259573636] [2020-10-19 22:12:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:37,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:37,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363567147] [2020-10-19 22:12:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:37,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:12:37,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:37,708 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 22:12:37,709 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:37,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:37,716 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:37,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 22:12:37,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:12:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:12:37,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259573636] [2020-10-19 22:12:37,804 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:37,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363567147] [2020-10-19 22:12:37,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:37,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:12:37,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638100307] [2020-10-19 22:12:37,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:12:37,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:37,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:12:37,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:12:37,807 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-10-19 22:12:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:37,887 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-19 22:12:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:12:37,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 22:12:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:37,889 INFO L225 Difference]: With dead ends: 31 [2020-10-19 22:12:37,889 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 22:12:37,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:12:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 22:12:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-19 22:12:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:12:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-19 22:12:37,896 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2020-10-19 22:12:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:37,896 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-19 22:12:37,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:12:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-19 22:12:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:12:37,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:37,898 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] [2020-10-19 22:12:38,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:12:38,113 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash -689607655, now seen corresponding path program 1 times [2020-10-19 22:12:38,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:38,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773047851] [2020-10-19 22:12:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:38,132 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:38,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175130266] [2020-10-19 22:12:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:38,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:12:38,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:12:38,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773047851] [2020-10-19 22:12:38,266 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:38,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175130266] [2020-10-19 22:12:38,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:38,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:12:38,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601505912] [2020-10-19 22:12:38,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:12:38,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:12:38,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:12:38,268 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-10-19 22:12:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:38,408 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-19 22:12:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:12:38,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:12:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:38,423 INFO L225 Difference]: With dead ends: 65 [2020-10-19 22:12:38,423 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 22:12:38,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:12:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 22:12:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-10-19 22:12:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 22:12:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-19 22:12:38,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2020-10-19 22:12:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:38,431 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-19 22:12:38,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:12:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-19 22:12:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:12:38,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:38,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:38,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:38,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:38,646 INFO L82 PathProgramCache]: Analyzing trace with hash 489568854, now seen corresponding path program 1 times [2020-10-19 22:12:38,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:38,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578469417] [2020-10-19 22:12:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:38,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:38,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720775147] [2020-10-19 22:12:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:38,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-19 22:12:38,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:38,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-10-19 22:12:38,764 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:38,775 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-10-19 22:12:38,789 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 22:12:38,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:38,798 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-19 22:12:38,844 INFO L350 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2020-10-19 22:12:38,844 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2020-10-19 22:12:38,846 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:38,857 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:31 [2020-10-19 22:12:38,903 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 22:12:38,904 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 32 [2020-10-19 22:12:38,905 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:38,918 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:38,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2020-10-19 22:12:39,002 INFO L350 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2020-10-19 22:12:39,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 46 [2020-10-19 22:12:39,004 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:39,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:39,037 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 22:12:39,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:74 [2020-10-19 22:12:39,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:12:39,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-19 22:12:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:12:39,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578469417] [2020-10-19 22:12:39,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:39,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720775147] [2020-10-19 22:12:39,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:39,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-19 22:12:39,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728892590] [2020-10-19 22:12:39,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:12:39,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:12:39,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:12:39,288 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 13 states. [2020-10-19 22:12:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:41,939 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-19 22:12:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 22:12:41,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-19 22:12:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:41,941 INFO L225 Difference]: With dead ends: 65 [2020-10-19 22:12:41,941 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 22:12:41,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-19 22:12:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 22:12:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-19 22:12:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 22:12:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-19 22:12:41,955 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2020-10-19 22:12:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:41,955 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-19 22:12:41,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:12:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-19 22:12:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:12:41,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:41,957 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:42,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:42,171 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash 414465226, now seen corresponding path program 2 times [2020-10-19 22:12:42,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:42,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338417175] [2020-10-19 22:12:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:42,198 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:42,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497318910] [2020-10-19 22:12:42,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:42,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:12:42,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:12:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:12:42,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 22:12:42,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338417175] [2020-10-19 22:12:42,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:42,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497318910] [2020-10-19 22:12:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:12:42,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709046822] [2020-10-19 22:12:42,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:12:42,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:12:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:12:42,332 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-19 22:12:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:42,515 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2020-10-19 22:12:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:12:42,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-19 22:12:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:42,517 INFO L225 Difference]: With dead ends: 89 [2020-10-19 22:12:42,518 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 22:12:42,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:12:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 22:12:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2020-10-19 22:12:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 22:12:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-19 22:12:42,525 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 32 [2020-10-19 22:12:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:42,526 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-19 22:12:42,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:12:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-19 22:12:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 22:12:42,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:42,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:42,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:42,729 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash 666565613, now seen corresponding path program 3 times [2020-10-19 22:12:42,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:42,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316116592] [2020-10-19 22:12:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:42,746 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:42,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060243838] [2020-10-19 22:12:42,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:42,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 22:12:42,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-10-19 22:12:42,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:12:42,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:42,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:12:43,017 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:12:43,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 22:12:43,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:12:43 BoogieIcfgContainer [2020-10-19 22:12:43,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:12:43,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:12:43,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:12:43,291 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:12:43,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:36" (3/4) ... [2020-10-19 22:12:43,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:12:43,360 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:12:43,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:12:43,362 INFO L168 Benchmark]: Toolchain (without parser) took 7349.54 ms. Allocated memory was 41.9 MB in the beginning and 62.4 MB in the end (delta: 20.4 MB). Free memory was 20.0 MB in the beginning and 35.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,363 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 63.1 kB). Peak memory consumption was 63.1 kB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.07 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.2 MB in the beginning and 18.6 MB in the end (delta: 584.4 kB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 42.5 MB. Free memory was 18.6 MB in the beginning and 16.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,365 INFO L168 Benchmark]: Boogie Preprocessor took 28.88 ms. Allocated memory is still 42.5 MB. Free memory was 16.8 MB in the beginning and 15.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,366 INFO L168 Benchmark]: RCFGBuilder took 356.58 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 15.4 MB in the end (delta: -229.4 kB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,367 INFO L168 Benchmark]: TraceAbstraction took 6524.62 ms. Allocated memory was 44.0 MB in the beginning and 62.4 MB in the end (delta: 18.4 MB). Free memory was 15.0 MB in the beginning and 40.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,367 INFO L168 Benchmark]: Witness Printer took 70.00 ms. Allocated memory is still 62.4 MB. Free memory was 40.0 MB in the beginning and 35.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 63.1 kB). Peak memory consumption was 63.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 318.07 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.2 MB in the beginning and 18.6 MB in the end (delta: 584.4 kB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 42.5 MB. Free memory was 18.6 MB in the beginning and 16.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.88 ms. Allocated memory is still 42.5 MB. Free memory was 16.8 MB in the beginning and 15.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 356.58 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 15.4 MB in the end (delta: -229.4 kB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6524.62 ms. Allocated memory was 44.0 MB in the beginning and 62.4 MB in the end (delta: 18.4 MB). Free memory was 15.0 MB in the beginning and 40.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. * Witness Printer took 70.00 ms. Allocated memory is still 62.4 MB. Free memory was 40.0 MB in the beginning and 35.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=3] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=3] [L31] COND TRUE i