./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/matrix-2.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 80a7a6e2534d75656de513ef49811aa0c37b16c0 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:32:27,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:32:27,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:32:27,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:32:27,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:32:27,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:32:27,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:32:27,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:32:27,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:32:27,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:32:27,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:32:27,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:32:27,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:32:27,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:32:27,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:32:27,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:32:27,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:32:27,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:32:27,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:32:27,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:32:27,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:32:27,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:32:27,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:32:27,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:32:27,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:32:27,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:32:27,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:32:27,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:32:27,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:32:27,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:32:27,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:32:27,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:32:27,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:32:27,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:32:27,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:32:27,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:32:27,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:32:27,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:32:27,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:32:27,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:32:27,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:32:27,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:32:27,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:32:27,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:32:27,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:32:27,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:32:27,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:32:27,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:32:27,720 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:32:27,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:32:27,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:32:27,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:32:27,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:32:27,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:32:27,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:32:27,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:32:27,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:32:27,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:32:27,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:32:27,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:32:27,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:32:27,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:32:27,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:32:27,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:32:27,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:32:27,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:32:27,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80a7a6e2534d75656de513ef49811aa0c37b16c0 [2021-08-29 10:32:27,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:32:27,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:32:27,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:32:27,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:32:27,983 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:32:27,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2.c [2021-08-29 10:32:28,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca7820ce/2483e3174594447bb5737abda42e2f83/FLAGe974ccf66 [2021-08-29 10:32:28,397 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:32:28,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c [2021-08-29 10:32:28,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca7820ce/2483e3174594447bb5737abda42e2f83/FLAGe974ccf66 [2021-08-29 10:32:28,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca7820ce/2483e3174594447bb5737abda42e2f83 [2021-08-29 10:32:28,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:32:28,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:32:28,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:32:28,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:32:28,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:32:28,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:32:28" (1/1) ... [2021-08-29 10:32:28,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2dbaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:28, skipping insertion in model container [2021-08-29 10:32:28,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:32:28" (1/1) ... [2021-08-29 10:32:28,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:32:28,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:32:28,945 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-08-29 10:32:28,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:32:28,971 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:32:28,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-08-29 10:32:28,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:32:29,005 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:32:29,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29 WrapperNode [2021-08-29 10:32:29,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:32:29,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:32:29,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:32:29,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:32:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:32:29,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:32:29,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:32:29,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:32:29,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:32:29,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:32:29,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:32:29,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:32:29,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (1/1) ... [2021-08-29 10:32:29,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:32:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:29,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 10:32:29,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 10:32:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:32:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:32:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 10:32:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:32:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:32:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 10:32:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 10:32:29,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:32:29,334 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-29 10:32:29,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:29 BoogieIcfgContainer [2021-08-29 10:32:29,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:32:29,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:32:29,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:32:29,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:32:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:32:28" (1/3) ... [2021-08-29 10:32:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c38253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:32:29, skipping insertion in model container [2021-08-29 10:32:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:32:29" (2/3) ... [2021-08-29 10:32:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c38253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:32:29, skipping insertion in model container [2021-08-29 10:32:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:29" (3/3) ... [2021-08-29 10:32:29,341 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-08-29 10:32:29,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:32:29,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 10:32:29,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:32:29,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 10:32:29,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 10:32:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 10:32:29,421 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:29,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:29,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2021-08-29 10:32:29,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:29,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478076230] [2021-08-29 10:32:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:29,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:29,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:29,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975681735] [2021-08-29 10:32:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:29,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:29,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:29,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 10:32:29,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 10:32:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:29,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 10:32:29,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:29,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 10:32:29,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:29,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478076230] [2021-08-29 10:32:29,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:29,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975681735] [2021-08-29 10:32:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975681735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:32:29,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:32:29,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 10:32:29,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738379968] [2021-08-29 10:32:29,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 10:32:29,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 10:32:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:32:29,745 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:32:29,874 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2021-08-29 10:32:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:32:29,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 10:32:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:32:29,881 INFO L225 Difference]: With dead ends: 57 [2021-08-29 10:32:29,881 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 10:32:29,883 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:32:29,885 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.33ms IncrementalHoareTripleChecker+Time [2021-08-29 10:32:29,886 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 108.33ms Time] [2021-08-29 10:32:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 10:32:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-08-29 10:32:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-08-29 10:32:29,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2021-08-29 10:32:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:32:29,911 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-08-29 10:32:29,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-08-29 10:32:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 10:32:29,912 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:29,912 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:29,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 10:32:30,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-29 10:32:30,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:30,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2021-08-29 10:32:30,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:30,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974713136] [2021-08-29 10:32:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:30,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:30,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:30,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537221902] [2021-08-29 10:32:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:30,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:30,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 10:32:30,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 10:32:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:32:30,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 10:32:30,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:32:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:32:30,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 10:32:30,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:32:30,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974713136] [2021-08-29 10:32:30,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 10:32:30,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537221902] [2021-08-29 10:32:30,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537221902] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:32:30,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:32:30,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 10:32:30,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688966015] [2021-08-29 10:32:30,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 10:32:30,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:32:30,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 10:32:30,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:32:30,237 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:32:30,300 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-08-29 10:32:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:32:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 10:32:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:32:30,301 INFO L225 Difference]: With dead ends: 47 [2021-08-29 10:32:30,302 INFO L226 Difference]: Without dead ends: 26 [2021-08-29 10:32:30,302 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:32:30,303 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.97ms IncrementalHoareTripleChecker+Time [2021-08-29 10:32:30,303 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 56.97ms Time] [2021-08-29 10:32:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-29 10:32:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-08-29 10:32:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-29 10:32:30,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-08-29 10:32:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:32:30,306 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-29 10:32:30,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:32:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-29 10:32:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 10:32:30,307 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:32:30,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:32:30,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 10:32:30,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-29 10:32:30,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:32:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:32:30,518 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2021-08-29 10:32:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:32:30,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955860779] [2021-08-29 10:32:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:30,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:32:30,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 10:32:30,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486335705] [2021-08-29 10:32:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:32:30,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:32:30,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 10:32:30,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 10:32:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 10:32:30,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 10:32:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 10:32:30,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 10:32:30,632 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 10:32:30,633 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 10:32:30,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 10:32:30,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:32:30,853 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:32:30,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:32:30 BoogieIcfgContainer [2021-08-29 10:32:30,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:32:30,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:32:30,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:32:30,876 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:32:30,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:32:29" (3/4) ... [2021-08-29 10:32:30,877 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 10:32:30,904 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:32:30,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:32:30,905 INFO L158 Benchmark]: Toolchain (without parser) took 2076.56ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 36.2MB in the end (delta: -4.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,905 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:32:30,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.90ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 51.0MB in the end (delta: -19.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.37ms. Allocated memory is still 67.1MB. Free memory was 51.0MB in the beginning and 49.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,906 INFO L158 Benchmark]: Boogie Preprocessor took 32.99ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 47.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:32:30,906 INFO L158 Benchmark]: RCFGBuilder took 240.60ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 38.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,907 INFO L158 Benchmark]: TraceAbstraction took 1538.87ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 38.3MB in the end (delta: -502.0kB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,907 INFO L158 Benchmark]: Witness Printer took 28.80ms. Allocated memory is still 67.1MB. Free memory was 38.3MB in the beginning and 36.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:32:30,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.90ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 51.0MB in the end (delta: -19.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.37ms. Allocated memory is still 67.1MB. Free memory was 51.0MB in the beginning and 49.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.99ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 47.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.60ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 38.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1538.87ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 38.3MB in the end (delta: -502.0kB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 28.80ms. Allocated memory is still 67.1MB. Free memory was 38.3MB in the beginning and 36.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ [L23] COND FALSE !(k