./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0 --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 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:24:07,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:24:07,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:24:07,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:24:07,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:24:07,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:24:07,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:24:07,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:24:07,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:24:07,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:24:07,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:24:07,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:24:07,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:24:07,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:24:07,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:24:07,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:24:07,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:24:07,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:24:07,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:24:07,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:24:07,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:24:07,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:24:07,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:24:07,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:24:07,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:24:07,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:24:07,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:24:07,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:24:07,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:24:07,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:24:07,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:24:07,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:24:07,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:24:07,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:24:07,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:24:07,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:24:07,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:24:07,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:24:07,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:24:07,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:24:07,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:24:07,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:24:07,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:24:07,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:24:07,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:24:07,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:24:07,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:24:07,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:24:07,276 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:24:07,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:24:07,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:24:07,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:24:07,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:24:07,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:24:07,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:24:07,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:24:07,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:24:07,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:24:07,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:24:07,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:24:07,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:24:07,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:24:07,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:24:07,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:24:07,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:07,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:24:07,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:24:07,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:24:07,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:24:07,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:24:07,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:24:07,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:24:07,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:24:07,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:24:07,283 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b [2021-11-22 16:24:07,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:24:07,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:24:07,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:24:07,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:24:07,585 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:24:07,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loops/matrix-2.c [2021-11-22 16:24:07,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/data/10861b6b8/957740c18f83446faaf4bd9677e10e01/FLAGb3e97e12a [2021-11-22 16:24:08,168 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:24:08,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/sv-benchmarks/c/loops/matrix-2.c [2021-11-22 16:24:08,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/data/10861b6b8/957740c18f83446faaf4bd9677e10e01/FLAGb3e97e12a [2021-11-22 16:24:08,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/data/10861b6b8/957740c18f83446faaf4bd9677e10e01 [2021-11-22 16:24:08,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:24:08,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:24:08,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:08,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:24:08,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:24:08,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62461303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08, skipping insertion in model container [2021-11-22 16:24:08,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:24:08,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:24:08,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-11-22 16:24:08,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:08,760 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:24:08,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-11-22 16:24:08,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:08,791 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:24:08,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08 WrapperNode [2021-11-22 16:24:08,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:08,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:08,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:24:08,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:24:08,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,834 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-22 16:24:08,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:08,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:24:08,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:24:08,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:24:08,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:24:08,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:24:08,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:24:08,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:24:08,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (1/1) ... [2021-11-22 16:24:08,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:08,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:24:08,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:24:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:24:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:24:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:24:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 16:24:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:24:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:24:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 16:24:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:24:08,993 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:24:08,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:24:09,148 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:24:09,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:24:09,155 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 16:24:09,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:09 BoogieIcfgContainer [2021-11-22 16:24:09,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:24:09,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:24:09,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:24:09,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:24:09,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:24:08" (1/3) ... [2021-11-22 16:24:09,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d52f822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:09, skipping insertion in model container [2021-11-22 16:24:09,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:08" (2/3) ... [2021-11-22 16:24:09,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d52f822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:09, skipping insertion in model container [2021-11-22 16:24:09,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:09" (3/3) ... [2021-11-22 16:24:09,166 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-11-22 16:24:09,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:24:09,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:24:09,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:24:09,232 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-22 16:24:09,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:24:09,247 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) [2021-11-22 16:24:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:24:09,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:09,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:09,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2021-11-22 16:24:09,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:09,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884809593] [2021-11-22 16:24:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:09,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:09,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:24:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114215047] [2021-11-22 16:24:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:09,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:09,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:09,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:09,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:24:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 16:24:09,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:09,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:24:09,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884809593] [2021-11-22 16:24:09,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:24:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114215047] [2021-11-22 16:24:09,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114215047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:09,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:09,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:24:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722766874] [2021-11-22 16:24:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:09,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:24:09,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:24:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:09,696 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) [2021-11-22 16:24:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:09,830 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2021-11-22 16:24:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:24:09,835 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 [2021-11-22 16:24:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:09,844 INFO L225 Difference]: With dead ends: 57 [2021-11-22 16:24:09,844 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 16:24:09,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:09,863 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:09,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 55 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:24:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 16:24:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-11-22 16:24:09,906 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) [2021-11-22 16:24:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-22 16:24:09,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2021-11-22 16:24:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:09,909 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-22 16:24:09,909 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) [2021-11-22 16:24:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-22 16:24:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 16:24:09,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:09,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:09,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:10,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-22 16:24:10,121 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2021-11-22 16:24:10,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:10,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835760427] [2021-11-22 16:24:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:10,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:10,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:24:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229514944] [2021-11-22 16:24:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:10,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:10,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:10,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:24:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:24:10,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:10,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:24:10,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835760427] [2021-11-22 16:24:10,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:24:10,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229514944] [2021-11-22 16:24:10,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229514944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:10,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:10,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:24:10,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009168244] [2021-11-22 16:24:10,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:10,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:24:10,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:24:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:10,318 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) [2021-11-22 16:24:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:10,372 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-11-22 16:24:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:24:10,373 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 [2021-11-22 16:24:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:10,374 INFO L225 Difference]: With dead ends: 47 [2021-11-22 16:24:10,374 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 16:24:10,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:10,376 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:10,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 36 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 16:24:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-22 16:24:10,382 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) [2021-11-22 16:24:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-22 16:24:10,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-11-22 16:24:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:10,384 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-22 16:24:10,384 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) [2021-11-22 16:24:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-22 16:24:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 16:24:10,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:10,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:10,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:10,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:10,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2021-11-22 16:24:10,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580485592] [2021-11-22 16:24:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:10,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:10,616 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:24:10,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826349905] [2021-11-22 16:24:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:10,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:10,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:10,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:10,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:24:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:24:10,684 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:24:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:24:10,733 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:24:10,748 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:24:10,750 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:24:10,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:10,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-22 16:24:10,963 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 16:24:10,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:24:10,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:24:10 BoogieIcfgContainer [2021-11-22 16:24:10,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:24:10,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:24:10,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:24:10,998 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:24:10,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:09" (3/4) ... [2021-11-22 16:24:11,000 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 16:24:11,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b9488c-4e0f-40df-b6de-b2c62ad7200d/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 16:24:11,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:24:11,045 INFO L158 Benchmark]: Toolchain (without parser) took 2511.14ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 63.9MB in the beginning and 97.2MB in the end (delta: -33.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:11,045 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:11,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.79ms. Allocated memory is still 104.9MB. Free memory was 63.7MB in the beginning and 79.2MB in the end (delta: -15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:24:11,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.50ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:11,047 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:11,047 INFO L158 Benchmark]: RCFGBuilder took 288.95ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 65.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:24:11,048 INFO L158 Benchmark]: TraceAbstraction took 1837.96ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 64.5MB in the beginning and 99.3MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:11,048 INFO L158 Benchmark]: Witness Printer took 46.56ms. Allocated memory is still 136.3MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:11,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.79ms. Allocated memory is still 104.9MB. Free memory was 63.7MB in the beginning and 79.2MB in the end (delta: -15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.50ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.95ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 65.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1837.96ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 64.5MB in the beginning and 99.3MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.56ms. Allocated memory is still 136.3MB. Free memory was 99.3MB in the beginning and 97.2MB 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 VAL [j=0, maior=2147483646, matriz={4:0}, N_COL=1, N_LIN=1] [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ VAL [j=0, k=1, maior=2147483647, matriz={4:0}, N_COL=1, N_LIN=1] [L23] COND FALSE !(k