./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y --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 d998c441c771938676edf06a0e9387fce091f1e4d7230def291c87707c204f78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:01:54,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:01:54,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:01:54,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:01:54,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:01:54,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:01:54,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:01:54,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:01:54,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:01:54,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:01:54,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:01:54,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:01:54,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:01:54,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:01:54,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:01:54,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:01:54,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:01:54,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:01:54,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:01:54,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:01:54,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:01:54,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:01:54,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:01:54,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:01:54,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:01:54,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:01:54,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:01:54,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:01:54,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:01:54,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:01:54,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:01:54,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:01:54,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:01:54,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:01:54,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:01:54,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:01:54,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:01:54,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:01:54,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:01:54,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:01:54,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:01:54,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:01:55,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:01:55,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:01:55,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:01:55,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:01:55,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:01:55,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:01:55,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:01:55,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:01:55,022 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:01:55,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:01:55,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:01:55,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:01:55,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:01:55,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:01:55,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:01:55,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:01:55,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:01:55,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:01:55,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:01:55,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:01:55,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:01:55,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:01:55,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:01:55,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:01:55,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:55,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:01:55,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:01:55,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:01:55,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:01:55,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:01:55,031 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:01:55,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:01:55,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:01:55,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:01:55,035 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_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d998c441c771938676edf06a0e9387fce091f1e4d7230def291c87707c204f78 [2021-11-13 18:01:55,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:01:55,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:01:55,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:01:55,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:01:55,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:01:55,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2021-11-13 18:01:55,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/data/870c786bd/a4585393b80b4fbe97d7cdeb7fc06744/FLAG73118bbd8 [2021-11-13 18:01:56,100 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:01:56,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2021-11-13 18:01:56,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/data/870c786bd/a4585393b80b4fbe97d7cdeb7fc06744/FLAG73118bbd8 [2021-11-13 18:01:56,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/data/870c786bd/a4585393b80b4fbe97d7cdeb7fc06744 [2021-11-13 18:01:56,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:01:56,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:01:56,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:56,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:01:56,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:01:56,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aab4424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56, skipping insertion in model container [2021-11-13 18:01:56,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:01:56,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:01:56,705 WARN L228 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_195b8f9d-cb04-498a-b946-cae433c7e5d7/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2021-11-13 18:01:56,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:56,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:01:56,752 WARN L228 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_195b8f9d-cb04-498a-b946-cae433c7e5d7/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2021-11-13 18:01:56,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:56,781 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:01:56,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56 WrapperNode [2021-11-13 18:01:56,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:56,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:56,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:01:56,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:01:56,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:56,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:01:56,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:01:56,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:01:56,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:01:56,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:01:56,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:01:56,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:01:56,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (1/1) ... [2021-11-13 18:01:56,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:56,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:01:56,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:01:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:01:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:01:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:01:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:01:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:01:56,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:01:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:01:56,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:01:57,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:01:57,287 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:01:57,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:57 BoogieIcfgContainer [2021-11-13 18:01:57,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:01:57,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:01:57,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:01:57,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:01:57,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:01:56" (1/3) ... [2021-11-13 18:01:57,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb92303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:57, skipping insertion in model container [2021-11-13 18:01:57,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:56" (2/3) ... [2021-11-13 18:01:57,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb92303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:57, skipping insertion in model container [2021-11-13 18:01:57,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:57" (3/3) ... [2021-11-13 18:01:57,300 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound50.c [2021-11-13 18:01:57,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:01:57,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:01:57,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:01:57,387 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:01:57,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:01:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 18:01:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:01:57,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:57,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:01:57,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2021-11-13 18:01:57,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:57,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712505678] [2021-11-13 18:01:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:57,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:01:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:01:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:01:57,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:57,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712505678] [2021-11-13 18:01:57,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712505678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:57,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:57,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:01:57,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237330667] [2021-11-13 18:01:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:57,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:01:57,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:01:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:01:57,793 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:01:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:57,832 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-11-13 18:01:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:01:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-13 18:01:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:57,845 INFO L225 Difference]: With dead ends: 51 [2021-11-13 18:01:57,860 INFO L226 Difference]: Without dead ends: 23 [2021-11-13 18:01:57,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:01:57,869 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:57,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:01:57,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-13 18:01:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-13 18:01:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:01:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-13 18:01:57,949 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2021-11-13 18:01:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:57,950 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-13 18:01:57,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:01:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-13 18:01:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:01:57,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:57,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:01:57,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:01:57,956 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2021-11-13 18:01:57,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:57,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454022195] [2021-11-13 18:01:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:57,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:58,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:01:58,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074354514] [2021-11-13 18:01:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:58,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:58,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:58,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:01:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:58,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 18:01:58,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:01:58,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:01:58,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:58,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454022195] [2021-11-13 18:01:58,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:01:58,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074354514] [2021-11-13 18:01:58,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074354514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:58,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:58,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:01:58,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197135842] [2021-11-13 18:01:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:58,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:01:58,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:01:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:01:58,447 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:01:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:58,625 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-13 18:01:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:01:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-13 18:01:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:58,628 INFO L225 Difference]: With dead ends: 35 [2021-11-13 18:01:58,628 INFO L226 Difference]: Without dead ends: 31 [2021-11-13 18:01:58,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:01:58,631 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:58,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 81 Invalid, 56 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 116.94ms Time] [2021-11-13 18:01:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-13 18:01:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-11-13 18:01:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 18:01:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-13 18:01:58,643 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2021-11-13 18:01:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:58,645 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-13 18:01:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:01:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-13 18:01:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 18:01:58,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:58,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:01:58,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:58,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 18:01:58,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:58,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2021-11-13 18:01:58,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:58,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480199987] [2021-11-13 18:01:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:58,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:58,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:01:58,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772282741] [2021-11-13 18:01:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:58,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:58,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:58,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:01:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:58,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 18:01:58,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:01:59,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:01:59,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:59,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480199987] [2021-11-13 18:01:59,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:01:59,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772282741] [2021-11-13 18:01:59,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772282741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:59,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:01:59,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-11-13 18:01:59,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323336497] [2021-11-13 18:01:59,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:59,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:01:59,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:01:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:01:59,677 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:02:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:00,213 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-11-13 18:02:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:02:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-11-13 18:02:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:00,217 INFO L225 Difference]: With dead ends: 44 [2021-11-13 18:02:00,217 INFO L226 Difference]: Without dead ends: 38 [2021-11-13 18:02:00,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:02:00,221 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 355.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.20ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 391.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:00,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 138 Unknown, 0 Unchecked, 7.20ms Time], IncrementalHoareTripleChecker [12 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 391.51ms Time] [2021-11-13 18:02:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-13 18:02:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-11-13 18:02:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 18:02:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-13 18:02:00,235 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2021-11-13 18:02:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:00,236 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-13 18:02:00,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:02:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-13 18:02:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:02:00,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:00,239 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:02:00,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:02:00,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:00,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:02:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2021-11-13 18:02:00,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:00,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630353078] [2021-11-13 18:02:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:00,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:00,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:02:00,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591499324] [2021-11-13 18:02:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:00,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:02:00,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:02:00,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:02:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 18:02:00,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:02:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:02:01,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:02:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:02:01,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:01,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630353078] [2021-11-13 18:02:01,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:02:01,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591499324] [2021-11-13 18:02:01,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591499324] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:02:01,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:02:01,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2021-11-13 18:02:01,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163699275] [2021-11-13 18:02:01,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:02:01,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:02:01,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:02:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:02:01,951 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:02:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:03,358 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-11-13 18:02:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-13 18:02:03,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2021-11-13 18:02:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:03,360 INFO L225 Difference]: With dead ends: 45 [2021-11-13 18:02:03,360 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 18:02:03,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=256, Invalid=1226, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 18:02:03,364 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.42ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:03,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 189 Invalid, 295 Unknown, 0 Unchecked, 6.42ms Time], IncrementalHoareTripleChecker [47 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 437.71ms Time] [2021-11-13 18:02:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 18:02:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 18:02:03,366 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) [2021-11-13 18:02:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 18:02:03,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-11-13 18:02:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:03,367 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:02:03,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:02:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 18:02:03,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 18:02:03,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:02:03,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-13 18:02:03,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:03,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 18:02:04,241 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 18:02:04,241 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2021-11-13 18:02:04,241 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-11-13 18:02:04,242 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2021-11-13 18:02:04,242 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-13 18:02:04,242 INFO L861 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2021-11-13 18:02:04,242 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse0 .cse2 .cse1)) (= (+ .cse2 .cse1) (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) [2021-11-13 18:02:04,243 INFO L858 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2021-11-13 18:02:04,243 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2021-11-13 18:02:04,243 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2021-11-13 18:02:04,243 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 18:02:04,243 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse0 (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0))) (= (+ (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|)) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ .cse0 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) [2021-11-13 18:02:04,244 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 18:02:04,244 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-11-13 18:02:04,244 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 18:02:04,244 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~yx~0#1|)) (.cse0 (* 2 |ULTIMATE.start_main_~xy~0#1|)) (.cse3 (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|))) (.cse2 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| .cse0) (+ .cse1 .cse2)) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= (+ .cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse3 .cse0))) (= (+ .cse3 .cse2) (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) [2021-11-13 18:02:04,245 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2021-11-13 18:02:04,245 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2021-11-13 18:02:04,245 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-13 18:02:04,245 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2021-11-13 18:02:04,245 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2021-11-13 18:02:04,245 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-11-13 18:02:04,246 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2021-11-13 18:02:04,246 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-11-13 18:02:04,246 INFO L858 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2021-11-13 18:02:04,246 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2021-11-13 18:02:04,246 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-13 18:02:04,251 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-13 18:02:04,253 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:02:04,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:02:04 BoogieIcfgContainer [2021-11-13 18:02:04,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:02:04,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:02:04,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:02:04,273 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:02:04,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:57" (3/4) ... [2021-11-13 18:02:04,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:02:04,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-13 18:02:04,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-13 18:02:04,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-13 18:02:04,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 18:02:04,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 18:02:04,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:02:04,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:02:04,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:02:04,340 INFO L158 Benchmark]: Toolchain (without parser) took 7874.90ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 64.0MB in the beginning and 100.5MB in the end (delta: -36.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,340 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:02:04,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.53ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.8MB in the beginning and 93.3MB in the end (delta: -29.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.00ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 92.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,342 INFO L158 Benchmark]: Boogie Preprocessor took 29.33ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 91.1MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:02:04,343 INFO L158 Benchmark]: RCFGBuilder took 424.19ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 80.8MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,343 INFO L158 Benchmark]: TraceAbstraction took 6980.07ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 80.1MB in the beginning and 103.7MB in the end (delta: -23.6MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,344 INFO L158 Benchmark]: Witness Printer took 66.33ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 100.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:02:04,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.53ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.8MB in the beginning and 93.3MB in the end (delta: -29.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.00ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 92.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.33ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 91.1MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 424.19ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 80.8MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6980.07ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 80.1MB in the beginning and 103.7MB in the end (delta: -23.6MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 66.33ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 100.5MB in the end (delta: 3.1MB). 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: 16]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 946.16ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 829.25ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 425 IncrementalHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 81 mSDtfsCounter, 425 mSolverCounterSat, 19.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 33 NumberOfFragments, 159 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 408 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 730 SizeOfPredicates, 14 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 46/54 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: 32]: Loop Invariant Derived loop invariant: (x <= X || 2 * (y * x) == 2 * y + 2 * (X * y)) && 2 * (x * Y) + 2 * Y == 2 * (X * y) + X + v - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-13 18:02:04,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195b8f9d-cb04-498a-b946-cae433c7e5d7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE