./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn4f.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/ifeqn4f.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 eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:12:38,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:12:38,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:12:38,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:12:38,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:12:38,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:12:38,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:12:38,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:12:38,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:12:38,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:12:38,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:12:38,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:12:38,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:12:38,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:12:38,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:12:38,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:12:38,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:12:38,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:12:38,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:12:38,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:12:38,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:12:38,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:12:38,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:12:38,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:12:38,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:12:38,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:12:38,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:12:38,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:12:38,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:12:38,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:12:38,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:12:38,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:12:38,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:12:38,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:12:38,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:12:38,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:12:38,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:12:38,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:12:38,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:12:38,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:12:38,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:12:38,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:12:38,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:12:38,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:12:38,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:12:38,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:12:38,720 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:12:38,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:12:38,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:12:38,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:12:38,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:12:38,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:12:38,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:12:38,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:12:38,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:12:38,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:12:38,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:12:38,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:12:38,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:12:38,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:12:38,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:12:38,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:12:38,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:12:38,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:12:38,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:12:38,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:12:38,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:12:38,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:12:38,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:12:38,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:12:38,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:12:38,728 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 -> eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 [2020-10-19 22:12:38,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:12:38,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:12:38,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:12:38,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:12:38,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:12:38,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn4f.c [2020-10-19 22:12:39,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb6e1ae3/54de775665e84849a93fa9c28d386986/FLAG52c86d6ea [2020-10-19 22:12:39,607 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:12:39,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn4f.c [2020-10-19 22:12:39,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb6e1ae3/54de775665e84849a93fa9c28d386986/FLAG52c86d6ea [2020-10-19 22:12:39,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb6e1ae3/54de775665e84849a93fa9c28d386986 [2020-10-19 22:12:39,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:12:39,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:12:39,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:39,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:12:40,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:12:40,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:39" (1/1) ... [2020-10-19 22:12:40,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8809a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40, skipping insertion in model container [2020-10-19 22:12:40,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:12:39" (1/1) ... [2020-10-19 22:12:40,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:12:40,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:12:40,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:40,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:12:40,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:12:40,376 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:12:40,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40 WrapperNode [2020-10-19 22:12:40,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:12:40,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:40,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:12:40,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:12:40,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:12:40,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:12:40,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:12:40,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:12:40,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (1/1) ... [2020-10-19 22:12:40,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:12:40,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:12:40,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:12:40,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:12:40,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (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 22:12:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:12:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:12:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:12:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:12:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:12:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:12:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:12:40,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:12:40,864 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-19 22:12:40,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:40 BoogieIcfgContainer [2020-10-19 22:12:40,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:12:40,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:12:40,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:12:40,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:12:40,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:12:39" (1/3) ... [2020-10-19 22:12:40,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e892fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:40, skipping insertion in model container [2020-10-19 22:12:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:12:40" (2/3) ... [2020-10-19 22:12:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e892fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:12:40, skipping insertion in model container [2020-10-19 22:12:40,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:40" (3/3) ... [2020-10-19 22:12:40,887 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2020-10-19 22:12:40,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:12:40,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:12:40,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:12:40,938 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:12:40,938 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:12:40,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:12:40,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:12:40,939 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:12:40,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:12:40,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:12:40,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:12:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 22:12:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:12:40,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:40,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:40,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:40,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2020-10-19 22:12:40,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:40,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109577683] [2020-10-19 22:12:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:41,162 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 22:12:41,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109577683] [2020-10-19 22:12:41,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:41,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:12:41,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881036111] [2020-10-19 22:12:41,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:12:41,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:12:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:12:41,184 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-19 22:12:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:41,203 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2020-10-19 22:12:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:12:41,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-19 22:12:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:41,214 INFO L225 Difference]: With dead ends: 43 [2020-10-19 22:12:41,214 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:12:41,217 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 22:12:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:12:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 22:12:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:12:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-19 22:12:41,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-10-19 22:12:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:41,254 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-19 22:12:41,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:12:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-19 22:12:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:12:41,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:41,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:12:41,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:12:41,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2020-10-19 22:12:41,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:41,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054096061] [2020-10-19 22:12:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:41,363 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 22:12:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054096061] [2020-10-19 22:12:41,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:41,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:12:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044067504] [2020-10-19 22:12:41,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:12:41,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:41,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:12:41,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:12:41,367 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-10-19 22:12:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:41,474 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-10-19 22:12:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:12:41,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 22:12:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:41,476 INFO L225 Difference]: With dead ends: 45 [2020-10-19 22:12:41,476 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 22:12:41,477 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 22:12:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 22:12:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-19 22:12:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 22:12:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-19 22:12:41,484 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-10-19 22:12:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:41,485 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-19 22:12:41,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:12:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-19 22:12:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:12:41,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:41,486 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 22:12:41,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:12:41,487 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2020-10-19 22:12:41,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:41,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493114577] [2020-10-19 22:12:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:41,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:41,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626040827] [2020-10-19 22:12:41,509 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 22:12:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:41,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:12:41,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:41,643 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 22:12:41,644 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:12:41,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:12:41,650 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:12:41,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 22:12:41,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:12:41,759 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 22:12:41,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493114577] [2020-10-19 22:12:41,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626040827] [2020-10-19 22:12:41,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:12:41,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:12:41,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175274963] [2020-10-19 22:12:41,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:12:41,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:41,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:12:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:12:41,767 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-10-19 22:12:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:41,845 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-19 22:12:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:12:41,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 22:12:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:41,846 INFO L225 Difference]: With dead ends: 31 [2020-10-19 22:12:41,846 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 22:12:41,847 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 22:12:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 22:12:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-19 22:12:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:12:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-19 22:12:41,853 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2020-10-19 22:12:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:41,853 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-19 22:12:41,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:12:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-19 22:12:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:12:41,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:41,854 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 22:12:42,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:12:42,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash -689607655, now seen corresponding path program 1 times [2020-10-19 22:12:42,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:42,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918312280] [2020-10-19 22:12:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:42,093 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:42,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974825734] [2020-10-19 22:12:42,094 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 22:12:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:12:42,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:12:42,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:12:42,219 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 22:12:42,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918312280] [2020-10-19 22:12:42,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:12:42,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974825734] [2020-10-19 22:12:42,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:12:42,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:12:42,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165861400] [2020-10-19 22:12:42,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:12:42,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:12:42,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:12:42,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:12:42,222 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-10-19 22:12:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:12:42,390 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-19 22:12:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:12:42,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:12:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:12:42,392 INFO L225 Difference]: With dead ends: 65 [2020-10-19 22:12:42,392 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 22:12:42,393 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 22:12:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 22:12:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-10-19 22:12:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 22:12:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-19 22:12:42,399 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2020-10-19 22:12:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:12:42,399 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-19 22:12:42,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:12:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-19 22:12:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:12:42,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:12:42,400 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 22:12:42,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:42,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:12:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:12:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash 489568854, now seen corresponding path program 1 times [2020-10-19 22:12:42,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:12:42,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685318292] [2020-10-19 22:12:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:12:42,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:12:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357097914] [2020-10-19 22:12:42,639 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 22:12:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:12:42,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:12:42,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:12:42,764 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:12:42,764 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:12:42,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:12:43,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:12:43 BoogieIcfgContainer [2020-10-19 22:12:43,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:12:43,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:12:43,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:12:43,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:12:43,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:12:40" (3/4) ... [2020-10-19 22:12:43,036 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:12:43,120 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:12:43,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:12:43,122 INFO L168 Benchmark]: Toolchain (without parser) took 3129.08 ms. Allocated memory was 41.9 MB in the beginning and 51.9 MB in the end (delta: 10.0 MB). Free memory was 20.8 MB in the beginning and 33.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,123 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.61 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.9 MB in the beginning and 21.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.09 ms. Allocated memory is still 42.5 MB. Free memory was 21.3 MB in the beginning and 19.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,125 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 42.5 MB. Free memory was 19.5 MB in the beginning and 18.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,125 INFO L168 Benchmark]: RCFGBuilder took 389.93 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 19.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,126 INFO L168 Benchmark]: TraceAbstraction took 2159.81 ms. Allocated memory was 44.6 MB in the beginning and 50.3 MB in the end (delta: 5.8 MB). Free memory was 19.5 MB in the beginning and 12.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,127 INFO L168 Benchmark]: Witness Printer took 87.22 ms. Allocated memory was 50.3 MB in the beginning and 51.9 MB in the end (delta: 1.6 MB). Free memory was 12.0 MB in the beginning and 33.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 634.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:12:43,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 379.61 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.9 MB in the beginning and 21.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 72.09 ms. Allocated memory is still 42.5 MB. Free memory was 21.3 MB in the beginning and 19.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 42.5 MB. Free memory was 19.5 MB in the beginning and 18.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 389.93 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 19.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2159.81 ms. Allocated memory was 44.6 MB in the beginning and 50.3 MB in the end (delta: 5.8 MB). Free memory was 19.5 MB in the beginning and 12.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * Witness Printer took 87.22 ms. Allocated memory was 50.3 MB in the beginning and 51.9 MB in the end (delta: 1.6 MB). Free memory was 12.0 MB in the beginning and 33.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 634.4 kB. 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=2] [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=2] [L31] COND TRUE i