./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sumt5.c --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_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/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_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sumt5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/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_2cda84d5-a440-4877-8a3b-06436e3cad3d/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 7266d1842604adcab9c62572691d60a59e7d6b6f458785ea61f2fbc628da9d70 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:45:32,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:45:32,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:45:33,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:45:33,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:45:33,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:45:33,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:45:33,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:45:33,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:45:33,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:45:33,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:45:33,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:45:33,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:45:33,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:45:33,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:45:33,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:45:33,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:45:33,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:45:33,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:45:33,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:45:33,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:45:33,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:45:33,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:45:33,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:45:33,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:45:33,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:45:33,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:45:33,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:45:33,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:45:33,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:45:33,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:45:33,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:45:33,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:45:33,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:45:33,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:45:33,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:45:33,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:45:33,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:45:33,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:45:33,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:45:33,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:45:33,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:45:33,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:45:33,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:45:33,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:45:33,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:45:33,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:45:33,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:45:33,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:45:33,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:45:33,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:45:33,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:45:33,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:45:33,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:45:33,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:45:33,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:45:33,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:45:33,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:45:33,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:45:33,069 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_2cda84d5-a440-4877-8a3b-06436e3cad3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7266d1842604adcab9c62572691d60a59e7d6b6f458785ea61f2fbc628da9d70 [2021-12-06 17:45:33,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:45:33,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:45:33,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:45:33,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:45:33,276 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:45:33,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops-crafted-1/sumt5.c [2021-12-06 17:45:33,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/data/8913aca2f/ed8f25aca60a44ae9fb890c47d75d7d2/FLAG2e942be0e [2021-12-06 17:45:33,750 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:45:33,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/sv-benchmarks/c/loops-crafted-1/sumt5.c [2021-12-06 17:45:33,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/data/8913aca2f/ed8f25aca60a44ae9fb890c47d75d7d2/FLAG2e942be0e [2021-12-06 17:45:33,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/data/8913aca2f/ed8f25aca60a44ae9fb890c47d75d7d2 [2021-12-06 17:45:33,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:45:33,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:45:33,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:45:33,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:45:33,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:45:33,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca3e91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33, skipping insertion in model container [2021-12-06 17:45:33,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:45:33,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:45:33,906 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_2cda84d5-a440-4877-8a3b-06436e3cad3d/sv-benchmarks/c/loops-crafted-1/sumt5.c[403,416] [2021-12-06 17:45:33,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:45:33,921 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:45:33,930 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_2cda84d5-a440-4877-8a3b-06436e3cad3d/sv-benchmarks/c/loops-crafted-1/sumt5.c[403,416] [2021-12-06 17:45:33,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:45:33,943 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:45:33,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33 WrapperNode [2021-12-06 17:45:33,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:45:33,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:45:33,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:45:33,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:45:33,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,968 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-12-06 17:45:33,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:45:33,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:45:33,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:45:33,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:45:33,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:45:33,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:45:33,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:45:33,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:45:33,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (1/1) ... [2021-12-06 17:45:33,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:45:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:34,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:45:34,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:45:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:45:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:45:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:45:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:45:34,099 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:45:34,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:45:38,648 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:45:38,653 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:45:38,653 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:45:38,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:45:38 BoogieIcfgContainer [2021-12-06 17:45:38,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:45:38,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:45:38,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:45:38,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:45:38,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:45:33" (1/3) ... [2021-12-06 17:45:38,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c1d87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:45:38, skipping insertion in model container [2021-12-06 17:45:38,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:33" (2/3) ... [2021-12-06 17:45:38,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c1d87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:45:38, skipping insertion in model container [2021-12-06 17:45:38,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:45:38" (3/3) ... [2021-12-06 17:45:38,660 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt5.c [2021-12-06 17:45:38,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:45:38,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:45:38,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:45:38,701 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 [2021-12-06 17:45:38,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:45:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-12-06 17:45:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 17:45:38,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:38,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:38,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1807766728, now seen corresponding path program 1 times [2021-12-06 17:45:38,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:38,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903165467] [2021-12-06 17:45:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:38,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:38,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903165467] [2021-12-06 17:45:38,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903165467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:38,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:38,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:45:38,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052592793] [2021-12-06 17:45:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:38,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:45:38,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:38,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:45:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:45:38,845 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-06 17:45:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:38,855 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-12-06 17:45:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:45:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-06 17:45:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:38,863 INFO L225 Difference]: With dead ends: 25 [2021-12-06 17:45:38,863 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 17:45:38,865 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 [2021-12-06 17:45:38,868 INFO L933 BasicCegarLoop]: 22 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, 22 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 [2021-12-06 17:45:38,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:45:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 17:45:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 17:45:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-12-06 17:45:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-06 17:45:38,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2021-12-06 17:45:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:38,891 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-06 17:45:38,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-06 17:45:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-12-06 17:45:38,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 17:45:38,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:38,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:38,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:45:38,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:38,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1806992162, now seen corresponding path program 1 times [2021-12-06 17:45:38,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:38,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241428606] [2021-12-06 17:45:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:38,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:39,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:39,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241428606] [2021-12-06 17:45:39,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241428606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:39,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:39,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:45:39,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58090175] [2021-12-06 17:45:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:39,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:45:39,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:45:39,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:45:39,117 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-06 17:45:41,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:43,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:43,612 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-12-06 17:45:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:45:43,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-06 17:45:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:43,613 INFO L225 Difference]: With dead ends: 19 [2021-12-06 17:45:43,613 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 17:45:43,613 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 [2021-12-06 17:45:43,615 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:43,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 17:45:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 17:45:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-06 17:45:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-12-06 17:45:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-12-06 17:45:43,619 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2021-12-06 17:45:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:43,619 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-06 17:45:43,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-06 17:45:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-12-06 17:45:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 17:45:43,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:43,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:43,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:45:43,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 92541021, now seen corresponding path program 1 times [2021-12-06 17:45:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:43,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976174718] [2021-12-06 17:45:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:43,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:44,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976174718] [2021-12-06 17:45:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976174718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280623823] [2021-12-06 17:45:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:44,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:44,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:44,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:44,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:45:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:44,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:45:44,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:44,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:45:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280623823] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:44,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:45:44,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 13 [2021-12-06 17:45:44,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613937029] [2021-12-06 17:45:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:45:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:45:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:45:44,594 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 17:45:46,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:48,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:51,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:51,298 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-12-06 17:45:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:45:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-12-06 17:45:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:51,299 INFO L225 Difference]: With dead ends: 21 [2021-12-06 17:45:51,299 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 17:45:51,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:45:51,301 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:51,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2021-12-06 17:45:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 17:45:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-12-06 17:45:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2021-12-06 17:45:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-12-06 17:45:51,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2021-12-06 17:45:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:51,304 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-12-06 17:45:51,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-06 17:45:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2021-12-06 17:45:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 17:45:51,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:51,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:51,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:45:51,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 17:45:51,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash -30668939, now seen corresponding path program 1 times [2021-12-06 17:45:51,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:51,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873753116] [2021-12-06 17:45:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:51,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:51,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:51,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873753116] [2021-12-06 17:45:51,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873753116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:51,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:51,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:45:51,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633549178] [2021-12-06 17:45:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:51,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:45:51,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:51,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:45:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:45:51,635 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-12-06 17:45:53,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:53,882 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-12-06 17:45:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:45:53,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-12-06 17:45:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:53,883 INFO L225 Difference]: With dead ends: 29 [2021-12-06 17:45:53,883 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 17:45:53,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:45:53,884 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:53,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 17:45:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 17:45:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-06 17:45:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2021-12-06 17:45:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-12-06 17:45:53,888 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2021-12-06 17:45:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:53,888 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-12-06 17:45:53,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-12-06 17:45:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-12-06 17:45:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 17:45:53,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:53,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:53,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:45:53,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash -559120592, now seen corresponding path program 1 times [2021-12-06 17:45:53,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:53,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225637855] [2021-12-06 17:45:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:53,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:53,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225637855] [2021-12-06 17:45:53,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225637855] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409917930] [2021-12-06 17:45:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:53,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:53,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:53,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:53,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:45:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:53,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 17:45:53,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:54,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:45:54,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409917930] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:54,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:45:54,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 12 [2021-12-06 17:45:54,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897309972] [2021-12-06 17:45:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:54,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:45:54,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:45:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:45:54,514 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-06 17:45:56,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:58,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:00,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:01,172 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-12-06 17:46:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2021-12-06 17:46:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:01,173 INFO L225 Difference]: With dead ends: 27 [2021-12-06 17:46:01,173 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 17:46:01,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:46:01,174 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:01,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2021-12-06 17:46:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 17:46:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-12-06 17:46:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-12-06 17:46:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-12-06 17:46:01,178 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 14 [2021-12-06 17:46:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:01,178 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-12-06 17:46:01,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-06 17:46:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-12-06 17:46:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 17:46:01,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:01,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:01,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 17:46:01,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:01,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1385803293, now seen corresponding path program 1 times [2021-12-06 17:46:01,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:01,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786494823] [2021-12-06 17:46:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:01,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:01,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786494823] [2021-12-06 17:46:01,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786494823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839435138] [2021-12-06 17:46:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:01,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:01,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:46:01,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:46:01,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:46:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:01,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 17:46:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:46:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:01,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:46:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:46:02,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839435138] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:02,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:46:02,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 15 [2021-12-06 17:46:02,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159005105] [2021-12-06 17:46:02,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:02,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:46:02,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:46:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:46:02,210 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-06 17:46:04,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:06,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:08,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:08,914 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2021-12-06 17:46:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2021-12-06 17:46:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:08,916 INFO L225 Difference]: With dead ends: 28 [2021-12-06 17:46:08,916 INFO L226 Difference]: Without dead ends: 24 [2021-12-06 17:46:08,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:46:08,917 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:08,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2021-12-06 17:46:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-06 17:46:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-12-06 17:46:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2021-12-06 17:46:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-12-06 17:46:08,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 15 [2021-12-06 17:46:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:08,920 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-12-06 17:46:08,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-06 17:46:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-12-06 17:46:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 17:46:08,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:08,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:08,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:46:09,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:09,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1692047339, now seen corresponding path program 1 times [2021-12-06 17:46:09,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844930895] [2021-12-06 17:46:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:09,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:09,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844930895] [2021-12-06 17:46:09,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844930895] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180577049] [2021-12-06 17:46:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:09,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:46:09,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:46:09,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:46:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:09,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 17:46:09,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:46:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:09,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:46:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:46:09,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180577049] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:09,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:46:09,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 12 [2021-12-06 17:46:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913944809] [2021-12-06 17:46:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:09,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:46:09,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:46:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:46:09,653 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-06 17:46:11,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:13,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:16,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:18,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:18,499 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-12-06 17:46:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 16 [2021-12-06 17:46:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:18,500 INFO L225 Difference]: With dead ends: 35 [2021-12-06 17:46:18,500 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 17:46:18,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:46:18,501 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:18,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 8.8s Time] [2021-12-06 17:46:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 17:46:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 17:46:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2021-12-06 17:46:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-12-06 17:46:18,506 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 16 [2021-12-06 17:46:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:18,506 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-12-06 17:46:18,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-06 17:46:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-12-06 17:46:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 17:46:18,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:18,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:18,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:46:18,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 17:46:18,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:18,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1389173333, now seen corresponding path program 1 times [2021-12-06 17:46:18,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:18,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334332892] [2021-12-06 17:46:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:18,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:46:18,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334332892] [2021-12-06 17:46:18,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334332892] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287143543] [2021-12-06 17:46:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:18,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:18,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:46:18,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:46:18,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:46:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:18,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 17:46:18,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:46:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:19,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:46:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:46:19,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287143543] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:46:19,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:46:19,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 10] total 17 [2021-12-06 17:46:19,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7297619] [2021-12-06 17:46:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:19,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:46:19,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:46:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:46:19,584 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-12-06 17:46:21,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:23,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:24,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:24,129 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-12-06 17:46:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 21 [2021-12-06 17:46:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:24,129 INFO L225 Difference]: With dead ends: 31 [2021-12-06 17:46:24,130 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:46:24,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:46:24,131 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:24,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 17:46:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:46:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:46:24,131 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) [2021-12-06 17:46:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:46:24,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-12-06 17:46:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:24,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:46:24,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-12-06 17:46:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:46:24,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:46:24,134 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:46:24,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 17:46:24,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:46:24,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:46:24,377 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 32) no Hoare annotation was computed. [2021-12-06 17:46:24,378 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 32) no Hoare annotation was computed. [2021-12-06 17:46:24,378 INFO L861 garLoopResultBuilder]: At program point L36(lines 16 37) the Hoare annotation is: true [2021-12-06 17:46:24,379 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:46:24,379 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:46:24,379 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:46:24,379 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-12-06 17:46:24,380 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-12-06 17:46:24,380 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:46:24,380 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 32) no Hoare annotation was computed. [2021-12-06 17:46:24,380 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 23 32) no Hoare annotation was computed. [2021-12-06 17:46:24,381 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 32) no Hoare annotation was computed. [2021-12-06 17:46:24,381 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 34) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~l~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~v3~0#1| |ULTIMATE.start_main_~v4~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 4294967296)) [2021-12-06 17:46:24,381 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 34) no Hoare annotation was computed. [2021-12-06 17:46:24,381 INFO L858 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-12-06 17:46:24,382 INFO L861 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2021-12-06 17:46:24,382 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-12-06 17:46:24,390 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:24,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:46:24,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:46:24 BoogieIcfgContainer [2021-12-06 17:46:24,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:46:24,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:46:24,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:46:24,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:46:24,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:45:38" (3/4) ... [2021-12-06 17:46:24,421 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:46:24,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-06 17:46:24,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 17:46:24,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:46:24,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:46:24,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:46:24,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:46:24,450 INFO L158 Benchmark]: Toolchain (without parser) took 50683.65ms. Allocated memory is still 109.1MB. Free memory was 68.9MB in the beginning and 65.1MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,450 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:46:24,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.99ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 83.4MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.22ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,451 INFO L158 Benchmark]: Boogie Preprocessor took 15.35ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 80.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,451 INFO L158 Benchmark]: RCFGBuilder took 4669.36ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 71.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,452 INFO L158 Benchmark]: TraceAbstraction took 45761.33ms. Allocated memory is still 109.1MB. Free memory was 70.7MB in the beginning and 67.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,452 INFO L158 Benchmark]: Witness Printer took 32.64ms. Allocated memory is still 109.1MB. Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:46:24,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.99ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 83.4MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.22ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.35ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 80.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4669.36ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 71.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 45761.33ms. Allocated memory is still 109.1MB. Free memory was 70.7MB in the beginning and 67.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 32.64ms. Allocated memory is still 109.1MB. Free memory was 67.2MB in the beginning and 65.1MB 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: 10]: 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 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.7s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 40.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 36.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 210 IncrementalHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 81 mSDtfsCounter, 210 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 109 SyntacticMatches, 15 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=7, InterpolantAutomatonStates: 34, 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, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 14 HoareAnnotationTreeSize, 3 FomulaSimplifications, 170 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 2772 SizeOfPredicates, 35 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 52/91 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: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: l % 4294967296 == (v3 + v4 + i + j + k) % 4294967296 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-06 17:46:24,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cda84d5-a440-4877-8a3b-06436e3cad3d/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