./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL --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-0f8a17c [2021-11-19 04:56:53,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:56:53,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:56:53,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:56:53,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:56:53,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:56:53,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:56:53,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:56:53,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:56:53,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:56:53,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:56:53,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:56:53,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:56:53,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:56:53,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:56:53,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:56:53,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:56:53,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:56:53,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:56:53,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:56:53,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:56:53,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:56:53,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:56:53,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:56:53,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:56:53,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:56:53,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:56:53,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:56:53,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:56:53,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:56:53,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:56:53,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:56:53,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:56:53,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:56:53,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:56:53,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:56:53,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:56:53,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:56:53,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:56:53,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:56:53,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:56:53,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:56:53,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:56:53,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:56:53,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:56:53,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:56:53,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:56:53,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:56:53,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:56:53,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:56:53,748 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:56:53,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:56:53,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:56:53,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:56:53,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:56:53,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:56:53,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:56:53,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:56:53,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:56:53,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:56:53,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:56:53,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:56:53,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:56:53,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:56:53,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:56:53,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:56:53,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:56:53,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:56:53,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:56:53,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:56:53,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:56:53,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:56:53,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:56:53,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:56:53,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:56:53,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:56:53,754 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_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b [2021-11-19 04:56:54,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:56:54,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:56:54,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:56:54,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:56:54,255 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:56:54,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/loops/matrix-2.c [2021-11-19 04:56:54,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/data/03773179c/48ff2589d412422cb17e79164e167c63/FLAGb56883b98 [2021-11-19 04:56:55,020 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:56:55,022 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/sv-benchmarks/c/loops/matrix-2.c [2021-11-19 04:56:55,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/data/03773179c/48ff2589d412422cb17e79164e167c63/FLAGb56883b98 [2021-11-19 04:56:55,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/data/03773179c/48ff2589d412422cb17e79164e167c63 [2021-11-19 04:56:55,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:56:55,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:56:55,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:56:55,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:56:55,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:56:55,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d6f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55, skipping insertion in model container [2021-11-19 04:56:55,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:56:55,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:56:55,624 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_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-11-19 04:56:55,660 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:56:55,670 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:56:55,686 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_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-11-19 04:56:55,717 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:56:55,733 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:56:55,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55 WrapperNode [2021-11-19 04:56:55,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:56:55,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:56:55,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:56:55,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:56:55,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,822 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-19 04:56:55,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:56:55,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:56:55,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:56:55,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:56:55,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:56:55,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:56:55,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:56:55,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:56:55,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (1/1) ... [2021-11-19 04:56:55,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:56:55,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:56:55,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:56:55,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:56:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:56:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:56:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:56:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:56:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:56:55,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:56:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:56:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:56:56,077 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:56:56,081 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:56:56,404 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:56:56,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:56:56,413 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 04:56:56,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:56 BoogieIcfgContainer [2021-11-19 04:56:56,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:56:56,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:56:56,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:56:56,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:56:56,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:56:55" (1/3) ... [2021-11-19 04:56:56,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c56cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:56, skipping insertion in model container [2021-11-19 04:56:56,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:55" (2/3) ... [2021-11-19 04:56:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c56cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:56, skipping insertion in model container [2021-11-19 04:56:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:56" (3/3) ... [2021-11-19 04:56:56,443 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-11-19 04:56:56,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:56:56,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:56:56,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:56:56,523 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 [2021-11-19 04:56:56,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:56:56,566 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) [2021-11-19 04:56:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 04:56:56,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:56,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:56,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:56:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2021-11-19 04:56:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:56,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304891327] [2021-11-19 04:56:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:56,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:56,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:56:56,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191031043] [2021-11-19 04:56:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:56,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:56:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:56:56,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:56:56,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:56:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:56,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:56:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:57,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:56:57,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:57,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304891327] [2021-11-19 04:56:57,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:56:57,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191031043] [2021-11-19 04:56:57,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191031043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:57,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:57,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:56:57,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238701957] [2021-11-19 04:56:57,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:57,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:56:57,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:56:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:56:57,119 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) [2021-11-19 04:56:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:57,287 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2021-11-19 04:56:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:56:57,293 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 [2021-11-19 04:56:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:57,334 INFO L225 Difference]: With dead ends: 57 [2021-11-19 04:56:57,334 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 04:56:57,338 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 [2021-11-19 04:56:57,343 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 [2021-11-19 04:56:57,344 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] [2021-11-19 04:56:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 04:56:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-11-19 04:56:57,386 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) [2021-11-19 04:56:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-19 04:56:57,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2021-11-19 04:56:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:57,389 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-19 04:56:57,390 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) [2021-11-19 04:56:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-19 04:56:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 04:56:57,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:57,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:57,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 04:56:57,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-19 04:56:57,618 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:56:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:57,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2021-11-19 04:56:57,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:57,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121214291] [2021-11-19 04:56:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:57,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:57,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:56:57,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125901707] [2021-11-19 04:56:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:57,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:56:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:56:57,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:56:57,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:56:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:57,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:56:57,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:57,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:56:57,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:57,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121214291] [2021-11-19 04:56:57,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:56:57,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125901707] [2021-11-19 04:56:57,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125901707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:57,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:57,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:56:57,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868245714] [2021-11-19 04:56:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:56:57,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:56:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:56:57,854 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) [2021-11-19 04:56:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:57,957 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-11-19 04:56:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:56:57,958 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 [2021-11-19 04:56:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:57,961 INFO L225 Difference]: With dead ends: 47 [2021-11-19 04:56:57,961 INFO L226 Difference]: Without dead ends: 26 [2021-11-19 04:56:57,963 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 [2021-11-19 04:56:57,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:57,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 36 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:56:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-19 04:56:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-19 04:56:57,980 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) [2021-11-19 04:56:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-19 04:56:57,983 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-11-19 04:56:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:57,983 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-19 04:56:57,984 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) [2021-11-19 04:56:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-19 04:56:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 04:56:57,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:57,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:58,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:58,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:56:58,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:56:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2021-11-19 04:56:58,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:58,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572139291] [2021-11-19 04:56:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:58,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:58,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:56:58,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824702126] [2021-11-19 04:56:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:58,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:56:58,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:56:58,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:56:58,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:56:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:56:58,304 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:56:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:56:58,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:56:58,350 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:56:58,351 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:56:58,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:58,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-19 04:56:58,578 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-19 04:56:58,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:56:58,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:56:58 BoogieIcfgContainer [2021-11-19 04:56:58,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:56:58,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:56:58,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:56:58,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:56:58,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:56" (3/4) ... [2021-11-19 04:56:58,648 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:56:58,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb2cd2e-7e76-4180-9d0b-45417f4fcba5/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:56:58,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:56:58,727 INFO L158 Benchmark]: Toolchain (without parser) took 3360.71ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 41.7MB in the beginning and 61.2MB in the end (delta: -19.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,728 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:56:58,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.79ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 41.4MB in the beginning and 81.7MB in the end (delta: -40.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.59ms. Allocated memory is still 107.0MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,742 INFO L158 Benchmark]: Boogie Preprocessor took 32.76ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 901.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,743 INFO L158 Benchmark]: RCFGBuilder took 558.68ms. Allocated memory is still 107.0MB. Free memory was 78.3MB in the beginning and 67.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,744 INFO L158 Benchmark]: TraceAbstraction took 2209.67ms. Allocated memory is still 107.0MB. Free memory was 66.6MB in the beginning and 63.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,744 INFO L158 Benchmark]: Witness Printer took 81.63ms. Allocated memory is still 107.0MB. Free memory was 63.3MB in the beginning and 61.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:58,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.79ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 41.4MB in the beginning and 81.7MB in the end (delta: -40.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.59ms. Allocated memory is still 107.0MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.76ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 901.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.68ms. Allocated memory is still 107.0MB. Free memory was 78.3MB in the beginning and 67.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2209.67ms. Allocated memory is still 107.0MB. Free memory was 66.6MB in the beginning and 63.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 81.63ms. Allocated memory is still 107.0MB. Free memory was 63.3MB in the beginning and 61.2MB 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