./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa --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 a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:16:06,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:16:06,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:16:06,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:16:06,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:16:06,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:16:06,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:16:06,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:16:06,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:16:06,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:16:06,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:16:06,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:16:06,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:16:06,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:16:06,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:16:06,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:16:06,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:16:06,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:16:06,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:16:06,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:16:06,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:16:06,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:16:06,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:16:06,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:16:06,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:16:06,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:16:06,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:16:06,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:16:06,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:16:06,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:16:06,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:16:06,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:16:06,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:16:06,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:16:06,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:16:06,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:16:06,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:16:06,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:16:06,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:16:06,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:16:06,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:16:06,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:16:06,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:16:06,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:16:06,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:16:06,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:16:06,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:16:06,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:16:06,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:16:06,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:16:06,162 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:16:06,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:16:06,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:16:06,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:16:06,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:16:06,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:16:06,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:16:06,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:16:06,165 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:16:06,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:16:06,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:16:06,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:16:06,165 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_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9 [2021-12-07 01:16:06,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:16:06,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:16:06,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:16:06,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:16:06,351 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:16:06,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-lit/gj2007b.i [2021-12-07 01:16:06,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/data/35baaa3d8/0ee9daea77a244859749eadffac55d6a/FLAG99c93df99 [2021-12-07 01:16:06,779 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:16:06,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/sv-benchmarks/c/loop-lit/gj2007b.i [2021-12-07 01:16:06,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/data/35baaa3d8/0ee9daea77a244859749eadffac55d6a/FLAG99c93df99 [2021-12-07 01:16:06,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/data/35baaa3d8/0ee9daea77a244859749eadffac55d6a [2021-12-07 01:16:06,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:16:06,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:16:06,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:16:06,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:16:06,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:16:06,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cde1b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06, skipping insertion in model container [2021-12-07 01:16:06,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:16:06,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:16:06,925 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_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/sv-benchmarks/c/loop-lit/gj2007b.i[895,908] [2021-12-07 01:16:06,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:16:06,937 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:16:06,946 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_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/sv-benchmarks/c/loop-lit/gj2007b.i[895,908] [2021-12-07 01:16:06,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:16:06,957 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:16:06,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06 WrapperNode [2021-12-07 01:16:06,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:16:06,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:16:06,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:16:06,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:16:06,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,979 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-12-07 01:16:06,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:16:06,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:16:06,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:16:06,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:16:06,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:16:06,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:16:06,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:16:06,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:16:06,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (1/1) ... [2021-12-07 01:16:07,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:16:07,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:16:07,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:16:07,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:16:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:16:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:16:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:16:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:16:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:16:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:16:07,092 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:16:07,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:16:07,164 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:16:07,170 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:16:07,170 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:16:07,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:07 BoogieIcfgContainer [2021-12-07 01:16:07,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:16:07,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:16:07,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:16:07,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:16:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:16:06" (1/3) ... [2021-12-07 01:16:07,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:16:07, skipping insertion in model container [2021-12-07 01:16:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:06" (2/3) ... [2021-12-07 01:16:07,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:16:07, skipping insertion in model container [2021-12-07 01:16:07,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:07" (3/3) ... [2021-12-07 01:16:07,180 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2021-12-07 01:16:07,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:16:07,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:16:07,233 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:16:07,239 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 [2021-12-07 01:16:07,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:16:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:16:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 01:16:07,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:07,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:07,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1819728808, now seen corresponding path program 1 times [2021-12-07 01:16:07,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070003434] [2021-12-07 01:16:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:07,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070003434] [2021-12-07 01:16:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070003434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:07,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:16:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:16:07,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649087958] [2021-12-07 01:16:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:07,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:16:07,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:16:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:16:07,402 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:07,420 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-12-07 01:16:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:16:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 01:16:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:07,430 INFO L225 Difference]: With dead ends: 29 [2021-12-07 01:16:07,430 INFO L226 Difference]: Without dead ends: 13 [2021-12-07 01:16:07,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:16:07,437 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:07,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-07 01:16:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-07 01:16:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-07 01:16:07,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-12-07 01:16:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:07,473 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-07 01:16:07,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-12-07 01:16:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 01:16:07,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:07,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:07,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:16:07,475 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:07,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1809570077, now seen corresponding path program 1 times [2021-12-07 01:16:07,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:07,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932733785] [2021-12-07 01:16:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:07,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:07,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932733785] [2021-12-07 01:16:07,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932733785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:07,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:16:07,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:16:07,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228507209] [2021-12-07 01:16:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:07,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:16:07,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:16:07,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:16:07,569 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:07,613 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-12-07 01:16:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:16:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 01:16:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:07,615 INFO L225 Difference]: With dead ends: 24 [2021-12-07 01:16:07,615 INFO L226 Difference]: Without dead ends: 22 [2021-12-07 01:16:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:16:07,618 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:07,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-07 01:16:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-12-07 01:16:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:16:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-12-07 01:16:07,627 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2021-12-07 01:16:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:07,627 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-12-07 01:16:07,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-12-07 01:16:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:16:07,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:07,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:07,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:16:07,629 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash 939127316, now seen corresponding path program 1 times [2021-12-07 01:16:07,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341556939] [2021-12-07 01:16:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:07,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:07,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341556939] [2021-12-07 01:16:07,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341556939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:16:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106441452] [2021-12-07 01:16:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:07,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:16:07,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:16:07,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:16:07,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:16:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:07,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:16:07,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:16:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:07,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:16:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106441452] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:16:07,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:16:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-07 01:16:07,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979260070] [2021-12-07 01:16:07,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:16:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:16:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:16:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:16:07,888 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:07,942 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-12-07 01:16:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:16:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-07 01:16:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:07,944 INFO L225 Difference]: With dead ends: 33 [2021-12-07 01:16:07,945 INFO L226 Difference]: Without dead ends: 29 [2021-12-07 01:16:07,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:16:07,946 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:07,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 47 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-07 01:16:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 15. [2021-12-07 01:16:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-07 01:16:07,952 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-12-07 01:16:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:07,952 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-07 01:16:07,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:16:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-07 01:16:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:16:07,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:07,953 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:07,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:16:08,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-07 01:16:08,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1433301184, now seen corresponding path program 1 times [2021-12-07 01:16:08,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:08,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216987413] [2021-12-07 01:16:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:08,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:16:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:08,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216987413] [2021-12-07 01:16:08,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216987413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:08,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:16:08,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:16:08,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345849661] [2021-12-07 01:16:08,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:08,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:16:08,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:08,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:16:08,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:16:08,331 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:08,369 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-12-07 01:16:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:16:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-07 01:16:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:08,370 INFO L225 Difference]: With dead ends: 28 [2021-12-07 01:16:08,370 INFO L226 Difference]: Without dead ends: 18 [2021-12-07 01:16:08,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:16:08,372 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:08,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-07 01:16:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-12-07 01:16:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-12-07 01:16:08,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-12-07 01:16:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:08,378 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-12-07 01:16:08,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-12-07 01:16:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 01:16:08,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:08,379 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:08,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:16:08,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash 356492519, now seen corresponding path program 1 times [2021-12-07 01:16:08,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:08,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422879017] [2021-12-07 01:16:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:08,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:16:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:16:08,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422879017] [2021-12-07 01:16:08,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422879017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:08,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:16:08,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:16:08,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713842036] [2021-12-07 01:16:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:08,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:16:08,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:16:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:16:08,422 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:08,437 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-12-07 01:16:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:16:08,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-07 01:16:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:08,439 INFO L225 Difference]: With dead ends: 29 [2021-12-07 01:16:08,439 INFO L226 Difference]: Without dead ends: 19 [2021-12-07 01:16:08,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:16:08,440 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:08,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-07 01:16:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-07 01:16:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-12-07 01:16:08,445 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2021-12-07 01:16:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:08,446 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-12-07 01:16:08,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-12-07 01:16:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 01:16:08,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:16:08,447 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:16:08,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:16:08,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:16:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:16:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 98327081, now seen corresponding path program 1 times [2021-12-07 01:16:08,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:16:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467363157] [2021-12-07 01:16:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:08,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:16:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:16:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:08,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:16:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467363157] [2021-12-07 01:16:08,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467363157] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:16:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035039450] [2021-12-07 01:16:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:16:08,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:16:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:16:08,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:16:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:16:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:16:08,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:16:08,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:16:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:16:08,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:16:08,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035039450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:16:08,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:16:08,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-07 01:16:08,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380856389] [2021-12-07 01:16:08,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:16:08,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:16:08,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:16:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:16:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:16:08,567 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:16:08,593 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-12-07 01:16:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:16:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-07 01:16:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:16:08,594 INFO L225 Difference]: With dead ends: 18 [2021-12-07 01:16:08,594 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 01:16:08,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:16:08,595 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:16:08,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:16:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 01:16:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 01:16:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-07 01:16:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 01:16:08,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-12-07 01:16:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:16:08,597 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 01:16:08,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:16:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 01:16:08,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 01:16:08,599 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:16:08,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:16:08,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:16:08,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 01:16:08,971 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 01:16:08,971 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L861 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-12-07 01:16:08,972 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~m~0#1|))) (or (and .cse0 .cse1 (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~m~0#1| 0)))) [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~m~0#1|))) (or (and .cse0 .cse1 (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~m~0#1| 0)))) [2021-12-07 01:16:08,972 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~m~0#1|))) (or (and .cse0 .cse1 (< |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~m~0#1| 0)))) [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-12-07 01:16:08,972 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-12-07 01:16:08,973 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-12-07 01:16:08,973 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-12-07 01:16:08,973 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-12-07 01:16:08,973 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-12-07 01:16:08,975 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-07 01:16:08,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:16:08,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:16:08 BoogieIcfgContainer [2021-12-07 01:16:08,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:16:08,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:16:08,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:16:08,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:16:08,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:07" (3/4) ... [2021-12-07 01:16:08,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 01:16:08,993 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-07 01:16:08,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-07 01:16:08,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-07 01:16:08,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 01:16:08,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 01:16:09,015 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:16:09,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:16:09,015 INFO L158 Benchmark]: Toolchain (without parser) took 2217.80ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 78.6MB in the beginning and 52.5MB in the end (delta: 26.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,015 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:16:09,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.03ms. Allocated memory is still 100.7MB. Free memory was 78.3MB in the beginning and 75.6MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.17ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:16:09,016 INFO L158 Benchmark]: Boogie Preprocessor took 12.87ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 73.1MB in the end (delta: 981.6kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,016 INFO L158 Benchmark]: RCFGBuilder took 179.34ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 64.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,017 INFO L158 Benchmark]: TraceAbstraction took 1811.28ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 64.0MB in the beginning and 54.6MB in the end (delta: 9.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,017 INFO L158 Benchmark]: Witness Printer took 29.09ms. Allocated memory is still 130.0MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:16:09,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.03ms. Allocated memory is still 100.7MB. Free memory was 78.3MB in the beginning and 75.6MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.17ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.87ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 73.1MB in the end (delta: 981.6kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 179.34ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 64.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1811.28ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 64.0MB in the beginning and 54.6MB in the end (delta: 9.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Witness Printer took 29.09ms. Allocated memory is still 130.0MB. Free memory was 54.6MB in the beginning and 52.5MB 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 233 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 71 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 12 PreInvPairs, 20 NumberOfFragments, 91 HoareAnnotationTreeSize, 12 FomulaSimplifications, 163 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 131 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 5 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 10/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((0 <= x && 0 <= m) && m < n) || ((0 <= x && 0 <= m) && m == 0) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-07 01:16:09,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2a3ff9-5f20-4858-b3f8-f0474772c71a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE