./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifcompf.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/ifcompf.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 92985165ddadd5833b6dd8db60f80f6054278511 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:12:04,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:12:04,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:12:04,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:12:04,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:12:04,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:12:04,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:12:04,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:12:04,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:12:04,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:12:04,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:12:04,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:12:04,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:12:04,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:12:04,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:12:04,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:12:04,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:12:04,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:12:04,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:12:04,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:12:04,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:12:04,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:12:04,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:12:04,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:12:04,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:12:04,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:12:04,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:12:04,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:12:04,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:12:04,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:12:04,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:12:04,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:12:04,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:12:04,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:12:04,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:12:04,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:12:04,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:12:04,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:12:04,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:12:04,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:12:04,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:12:04,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:12:04,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:12:04,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:12:04,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:12:04,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:12:04,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:12:04,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:12:04,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:12:04,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:12:04,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:12:04,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:12:04,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:12:04,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:12:04,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:12:04,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:12:04,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:12:04,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:12:04,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:12:04,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:12:04,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:12:04,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:12:04,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:12:04,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:12:04,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:12:04,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:12:04,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:12:04,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:12:04,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:12:04,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:12:04,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:12:04,629 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 -> 92985165ddadd5833b6dd8db60f80f6054278511 [2020-10-19 22:12:04,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:12:04,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:12:04,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:12:04,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:12:04,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:12:04,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifcompf.c [2020-10-19 22:12:04,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c496ad6/c282d094eebe482dbd567b3642c2782b/FLAG2bd53b72c [2020-10-19 22:12:05,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:12:05,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifcompf.c [2020-10-19 22:12:05,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c496ad6/c282d094eebe482dbd567b3642c2782b/FLAG2bd53b72c [2020-10-19 22:12:05,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c496ad6/c282d094eebe482dbd567b3642c2782b [2020-10-19 22:12:05,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:12:05,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:12:05,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:05,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:12:05,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:12:05,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:05" (1/1) ... [2020-10-19 22:12:05,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4ab3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:05, skipping insertion in model container [2020-10-19 22:12:05,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:05" (1/1) ... [2020-10-19 22:12:05,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:12:05,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:12:06,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:06,089 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:12:06,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:06,131 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:12:06,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06 WrapperNode [2020-10-19 22:12:06,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:06,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:06,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:12:06,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:12:06,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:06,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:12:06,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:12:06,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:12:06,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (1/1) ... [2020-10-19 22:12:06,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:12:06,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:12:06,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:12:06,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:12:06,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (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 22:12:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:12:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:12:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:12:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:12:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:12:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:12:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:12:06,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:12:06,547 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-19 22:12:06,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:06 BoogieIcfgContainer [2020-10-19 22:12:06,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:12:06,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:12:06,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:12:06,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:12:06,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:12:05" (1/3) ... [2020-10-19 22:12:06,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9ebb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:06, skipping insertion in model container [2020-10-19 22:12:06,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:06" (2/3) ... [2020-10-19 22:12:06,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9ebb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:06, skipping insertion in model container [2020-10-19 22:12:06,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:06" (3/3) ... [2020-10-19 22:12:06,558 INFO L111 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-10-19 22:12:06,571 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:12:06,579 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:12:06,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:12:06,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:12:06,657 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:12:06,657 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:12:06,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:12:06,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:12:06,658 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:12:06,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:12:06,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:12:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-19 22:12:06,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:12:06,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:06,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:06,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1152450264, now seen corresponding path program 1 times [2020-10-19 22:12:06,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:06,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956477906] [2020-10-19 22:12:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:06,864 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 22:12:06,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956477906] [2020-10-19 22:12:06,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:06,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:12:06,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810391842] [2020-10-19 22:12:06,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:12:06,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:12:06,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:12:06,886 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-19 22:12:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:06,903 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-10-19 22:12:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:12:06,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-19 22:12:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:06,914 INFO L225 Difference]: With dead ends: 51 [2020-10-19 22:12:06,915 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 22:12:06,918 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 22:12:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 22:12:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 22:12:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 22:12:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2020-10-19 22:12:06,950 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2020-10-19 22:12:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:06,951 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-10-19 22:12:06,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:12:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2020-10-19 22:12:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:12:06,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:06,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:06,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:12:06,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 670750212, now seen corresponding path program 1 times [2020-10-19 22:12:06,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:06,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638965099] [2020-10-19 22:12:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:07,053 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 22:12:07,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638965099] [2020-10-19 22:12:07,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:07,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:12:07,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272353288] [2020-10-19 22:12:07,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:12:07,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:12:07,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:12:07,058 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2020-10-19 22:12:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:07,179 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2020-10-19 22:12:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:12:07,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-19 22:12:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:07,181 INFO L225 Difference]: With dead ends: 56 [2020-10-19 22:12:07,181 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 22:12:07,182 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 22:12:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 22:12:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2020-10-19 22:12:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 22:12:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-19 22:12:07,190 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2020-10-19 22:12:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:07,191 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-19 22:12:07,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:12:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-19 22:12:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:12:07,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:07,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:07,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:12:07,193 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1978137699, now seen corresponding path program 1 times [2020-10-19 22:12:07,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:07,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881974306] [2020-10-19 22:12:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:07,221 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:07,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836107963] [2020-10-19 22:12:07,222 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 22:12:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:07,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:12:07,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:07,380 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 22:12:07,381 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:07,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:07,388 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:07,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 22:12:07,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:12:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:12:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881974306] [2020-10-19 22:12:07,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836107963] [2020-10-19 22:12:07,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:07,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:12:07,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389212295] [2020-10-19 22:12:07,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:12:07,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:07,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:12:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:12:07,485 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-19 22:12:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:07,583 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-19 22:12:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:12:07,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-19 22:12:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:07,585 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:12:07,585 INFO L226 Difference]: Without dead ends: 35 [2020-10-19 22:12:07,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 22:12:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-19 22:12:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-19 22:12:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 22:12:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-19 22:12:07,592 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 23 [2020-10-19 22:12:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:07,593 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-19 22:12:07,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:12:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-19 22:12:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:12:07,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:07,595 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] [2020-10-19 22:12:07,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:12:07,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash -41748655, now seen corresponding path program 1 times [2020-10-19 22:12:07,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:07,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239149627] [2020-10-19 22:12:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:07,833 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:07,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476153791] [2020-10-19 22:12:07,834 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 22:12:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:12:07,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:12:07,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239149627] [2020-10-19 22:12:07,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:07,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476153791] [2020-10-19 22:12:07,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:07,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:12:07,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515865439] [2020-10-19 22:12:07,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:12:07,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:07,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:12:07,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:12:07,986 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 7 states. [2020-10-19 22:12:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:08,193 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-19 22:12:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:12:08,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-19 22:12:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:08,195 INFO L225 Difference]: With dead ends: 87 [2020-10-19 22:12:08,195 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 22:12:08,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 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 22:12:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 22:12:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2020-10-19 22:12:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 22:12:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-19 22:12:08,203 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 27 [2020-10-19 22:12:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:08,204 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-19 22:12:08,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:12:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-19 22:12:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:12:08,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:08,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:08,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:08,421 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:08,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1991906082, now seen corresponding path program 1 times [2020-10-19 22:12:08,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:08,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171156236] [2020-10-19 22:12:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:08,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:08,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96740579] [2020-10-19 22:12:08,451 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 22:12:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:08,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-19 22:12:08,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:08,542 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 14 treesize of output 12 [2020-10-19 22:12:08,544 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:08,551 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:4 [2020-10-19 22:12:08,567 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 22:12:08,568 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:08,575 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,575 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-19 22:12:08,665 INFO L350 Elim1Store]: treesize reduction 34, result has 57.0 percent of original size [2020-10-19 22:12:08,665 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 3 case distinctions, treesize of input 31 treesize of output 59 [2020-10-19 22:12:08,667 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,709 INFO L625 ElimStorePlain]: treesize reduction 24, result has 64.2 percent of original size [2020-10-19 22:12:08,712 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:12 [2020-10-19 22:12:08,731 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 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-19 22:12:08,732 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:08,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,741 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-10-19 22:12:08,802 INFO L350 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2020-10-19 22:12:08,803 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 38 treesize of output 32 [2020-10-19 22:12:08,805 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:08,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:08,820 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 22:12:08,821 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:50 [2020-10-19 22:12:08,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:12:08,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-19 22:12:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 22:12:09,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171156236] [2020-10-19 22:12:09,014 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:09,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96740579] [2020-10-19 22:12:09,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:09,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-19 22:12:09,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982800267] [2020-10-19 22:12:09,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:12:09,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:09,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:12:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:12:09,019 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 13 states. [2020-10-19 22:12:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:09,465 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-19 22:12:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 22:12:09,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-19 22:12:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:09,467 INFO L225 Difference]: With dead ends: 73 [2020-10-19 22:12:09,467 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 22:12:09,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-19 22:12:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 22:12:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-19 22:12:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 22:12:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-19 22:12:09,475 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 36 [2020-10-19 22:12:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:09,475 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-19 22:12:09,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:12:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-19 22:12:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 22:12:09,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:09,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:09,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:09,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1965578258, now seen corresponding path program 2 times [2020-10-19 22:12:09,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:09,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664943622] [2020-10-19 22:12:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:09,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:09,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829970410] [2020-10-19 22:12:09,731 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 22:12:09,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:12:09,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:12:09,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:12:09,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-19 22:12:09,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664943622] [2020-10-19 22:12:09,880 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:09,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829970410] [2020-10-19 22:12:09,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:09,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:12:09,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969258091] [2020-10-19 22:12:09,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:12:09,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:12:09,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:12:09,886 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-10-19 22:12:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:10,109 INFO L93 Difference]: Finished difference Result 120 states and 139 transitions. [2020-10-19 22:12:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:12:10,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-19 22:12:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:10,113 INFO L225 Difference]: With dead ends: 120 [2020-10-19 22:12:10,113 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 22:12:10,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 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 22:12:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 22:12:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-10-19 22:12:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 22:12:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-19 22:12:10,132 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 40 [2020-10-19 22:12:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:10,132 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-19 22:12:10,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:12:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-19 22:12:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:12:10,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:10,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:10,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:10,335 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash -330916827, now seen corresponding path program 3 times [2020-10-19 22:12:10,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:10,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527035197] [2020-10-19 22:12:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:10,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:10,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972383007] [2020-10-19 22:12:10,363 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 22:12:10,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 22:12:10,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-10-19 22:12:10,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:12:10,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:10,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:12:10,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:12:10,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 22:12:10,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:12:10 BoogieIcfgContainer [2020-10-19 22:12:10,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:12:10,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:12:10,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:12:10,903 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:12:10,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:06" (3/4) ... [2020-10-19 22:12:10,906 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:12:10,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:12:10,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:12:10,991 INFO L168 Benchmark]: Toolchain (without parser) took 5148.61 ms. Allocated memory was 41.9 MB in the beginning and 61.9 MB in the end (delta: 19.9 MB). Free memory was 20.3 MB in the beginning and 43.9 MB in the end (delta: -23.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,991 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 31.5 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.91 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 18.7 MB in the end (delta: 748.6 kB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 42.5 MB. Free memory was 18.7 MB in the beginning and 16.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,993 INFO L168 Benchmark]: Boogie Preprocessor took 28.12 ms. Allocated memory is still 42.5 MB. Free memory was 16.7 MB in the beginning and 15.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,994 INFO L168 Benchmark]: RCFGBuilder took 344.76 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.1 MB in the beginning and 13.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,995 INFO L168 Benchmark]: TraceAbstraction took 4351.44 ms. Allocated memory was 44.0 MB in the beginning and 61.9 MB in the end (delta: 17.8 MB). Free memory was 13.1 MB in the beginning and 15.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:10,995 INFO L168 Benchmark]: Witness Printer took 86.34 ms. Allocated memory is still 61.9 MB. Free memory was 15.5 MB in the beginning and 43.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:11,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 31.5 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 284.91 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 18.7 MB in the end (delta: 748.6 kB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 42.5 MB. Free memory was 18.7 MB in the beginning and 16.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.12 ms. Allocated memory is still 42.5 MB. Free memory was 16.7 MB in the beginning and 15.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 344.76 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.1 MB in the beginning and 13.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4351.44 ms. Allocated memory was 44.0 MB in the beginning and 61.9 MB in the end (delta: 17.8 MB). Free memory was 13.1 MB in the beginning and 15.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. * Witness Printer took 86.34 ms. Allocated memory is still 61.9 MB. Free memory was 15.5 MB in the beginning and 43.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.5 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); [L30] long long *c = malloc(sizeof(long long)*N); [L32] i=0 VAL [N=3] [L32] COND TRUE i