./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS --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 b63b7ff6572e9a0a2b1c55134bda19bbc388077099b845df6f31e10a08695ebb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:45:21,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:45:21,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:45:21,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:45:21,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:45:21,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:45:21,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:45:21,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:45:21,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:45:21,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:45:21,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:45:21,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:45:21,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:45:21,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:45:21,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:45:21,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:45:21,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:45:21,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:45:21,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:45:21,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:45:22,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:45:22,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:45:22,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:45:22,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:45:22,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:45:22,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:45:22,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:45:22,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:45:22,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:45:22,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:45:22,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:45:22,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:45:22,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:45:22,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:45:22,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:45:22,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:45:22,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:45:22,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:45:22,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:45:22,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:45:22,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:45:22,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:45:22,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:45:22,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:45:22,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:45:22,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:45:22,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:45:22,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:45:22,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:45:22,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:45:22,071 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:45:22,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:45:22,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:45:22,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:45:22,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:45:22,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:45:22,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:45:22,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:45:22,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:45:22,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:45:22,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:45:22,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:45:22,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:45:22,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:45:22,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:45:22,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:45:22,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:45:22,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:45:22,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:45:22,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:45:22,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:45:22,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:45:22,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:45:22,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:45:22,078 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:45:22,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:45:22,078 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63b7ff6572e9a0a2b1c55134bda19bbc388077099b845df6f31e10a08695ebb [2022-11-23 01:45:22,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:45:22,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:45:22,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:45:22,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:45:22,412 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:45:22,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c [2022-11-23 01:45:25,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:45:25,532 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:45:25,533 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c [2022-11-23 01:45:25,539 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/data/cb5db2bbc/5461bdb6a6d64aea91cc876f3dcdaa0a/FLAGf6a4ff764 [2022-11-23 01:45:25,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/data/cb5db2bbc/5461bdb6a6d64aea91cc876f3dcdaa0a [2022-11-23 01:45:25,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:45:25,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:45:25,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:45:25,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:45:25,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:45:25,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7809e8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25, skipping insertion in model container [2022-11-23 01:45:25,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:45:25,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:45:25,798 WARN L237 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_9e19984f-103d-4740-9fb7-3a90fe660fc4/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c[555,568] [2022-11-23 01:45:25,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:45:25,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:45:25,876 WARN L237 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_9e19984f-103d-4740-9fb7-3a90fe660fc4/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound20.c[555,568] [2022-11-23 01:45:25,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:45:25,894 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:45:25,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25 WrapperNode [2022-11-23 01:45:25,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:45:25,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:45:25,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:45:25,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:45:25,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,927 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-23 01:45:25,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:45:25,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:45:25,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:45:25,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:45:25,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,947 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:45:25,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:45:25,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:45:25,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:45:25,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (1/1) ... [2022-11-23 01:45:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:45:25,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:25,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:45:26,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:45:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:45:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:45:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:45:26,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:45:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 01:45:26,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 01:45:26,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:45:26,103 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:45:26,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:45:26,216 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:45:26,217 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 01:45:26,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:45:26 BoogieIcfgContainer [2022-11-23 01:45:26,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:45:26,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:45:26,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:45:26,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:45:26,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:45:25" (1/3) ... [2022-11-23 01:45:26,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aef7c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:45:26, skipping insertion in model container [2022-11-23 01:45:26,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:25" (2/3) ... [2022-11-23 01:45:26,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aef7c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:45:26, skipping insertion in model container [2022-11-23 01:45:26,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:45:26" (3/3) ... [2022-11-23 01:45:26,228 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound20.c [2022-11-23 01:45:26,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:45:26,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:45:26,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:45:26,307 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1102d4bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:45:26,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:45:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 01:45:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 01:45:26,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:26,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:26,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 561702714, now seen corresponding path program 1 times [2022-11-23 01:45:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:26,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274736834] [2022-11-23 01:45:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:45:26,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274736834] [2022-11-23 01:45:26,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 01:45:26,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531241057] [2022-11-23 01:45:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:26,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:26,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:26,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:45:26,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:45:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:26,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 01:45:26,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:45:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:45:26,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:45:26,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531241057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:45:26,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:45:26,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:45:26,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658922313] [2022-11-23 01:45:26,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:45:26,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 01:45:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:45:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 01:45:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:45:26,717 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:45:26,751 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-11-23 01:45:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 01:45:26,754 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 01:45:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:45:26,761 INFO L225 Difference]: With dead ends: 34 [2022-11-23 01:45:26,761 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 01:45:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:45:26,771 INFO L413 NwaCegarLoop]: 20 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, 20 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 [2022-11-23 01:45:26,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:45:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 01:45:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 01:45:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 01:45:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-23 01:45:26,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2022-11-23 01:45:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:45:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-23 01:45:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-23 01:45:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 01:45:26,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:26,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:26,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:45:27,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 01:45:27,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash 180228959, now seen corresponding path program 1 times [2022-11-23 01:45:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:27,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559535978] [2022-11-23 01:45:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:27,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 01:45:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840747422] [2022-11-23 01:45:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:27,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:45:27,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:45:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 01:45:27,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:45:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:45:27,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:45:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:45:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559535978] [2022-11-23 01:45:27,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 01:45:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840747422] [2022-11-23 01:45:27,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840747422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:45:27,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:45:27,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:45:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249166518] [2022-11-23 01:45:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:45:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:45:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:45:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:45:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:45:27,201 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:45:27,279 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-23 01:45:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:45:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 01:45:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:45:27,283 INFO L225 Difference]: With dead ends: 25 [2022-11-23 01:45:27,283 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 01:45:27,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:45:27,285 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:45:27,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:45:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 01:45:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 01:45:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 01:45:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-23 01:45:27,293 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 8 [2022-11-23 01:45:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:45:27,294 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-23 01:45:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-23 01:45:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 01:45:27,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:27,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:27,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:45:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:27,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1219556645, now seen corresponding path program 1 times [2022-11-23 01:45:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:27,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119007852] [2022-11-23 01:45:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:27,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 01:45:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414082401] [2022-11-23 01:45:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:27,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:27,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:45:27,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:45:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:27,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:45:27,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:45:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:45:27,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:45:27,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:45:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119007852] [2022-11-23 01:45:27,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 01:45:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414082401] [2022-11-23 01:45:27,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414082401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:45:27,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:45:27,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:45:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911831370] [2022-11-23 01:45:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:45:27,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:45:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:45:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:45:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:45:27,654 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:45:27,683 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-23 01:45:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:45:27,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 01:45:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:45:27,686 INFO L225 Difference]: With dead ends: 29 [2022-11-23 01:45:27,688 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 01:45:27,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:45:27,690 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:45:27,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:45:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 01:45:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 01:45:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 01:45:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-23 01:45:27,706 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2022-11-23 01:45:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:45:27,707 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-23 01:45:27,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:45:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-23 01:45:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 01:45:27,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:27,711 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:27,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:45:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:27,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:27,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1817042812, now seen corresponding path program 1 times [2022-11-23 01:45:27,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:27,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309448216] [2022-11-23 01:45:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:27,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 01:45:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848206698] [2022-11-23 01:45:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:27,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:45:27,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:45:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:45:27,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:45:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:45:28,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:45:28,022 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 01:45:28,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 01:45:28,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:45:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:45:28,239 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 01:45:28,243 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 01:45:28,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:45:28 BoogieIcfgContainer [2022-11-23 01:45:28,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 01:45:28,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:45:28,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:45:28,268 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:45:28,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:45:26" (3/4) ... [2022-11-23 01:45:28,270 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 01:45:28,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 01:45:28,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:45:28,305 INFO L158 Benchmark]: Toolchain (without parser) took 2747.68ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 73.8MB in the end (delta: 63.4MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,305 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:45:28,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.87ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 139.5MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.25ms. Allocated memory is still 169.9MB. Free memory was 139.5MB in the beginning and 137.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,307 INFO L158 Benchmark]: Boogie Preprocessor took 20.98ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 136.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:45:28,307 INFO L158 Benchmark]: RCFGBuilder took 268.44ms. Allocated memory is still 169.9MB. Free memory was 136.6MB in the beginning and 126.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,307 INFO L158 Benchmark]: TraceAbstraction took 2045.71ms. Allocated memory is still 169.9MB. Free memory was 126.2MB in the beginning and 75.9MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,308 INFO L158 Benchmark]: Witness Printer took 37.57ms. Allocated memory is still 169.9MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:45:28,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.87ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 139.5MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.25ms. Allocated memory is still 169.9MB. Free memory was 139.5MB in the beginning and 137.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.98ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 136.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 268.44ms. Allocated memory is still 169.9MB. Free memory was 136.6MB in the beginning and 126.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2045.71ms. Allocated memory is still 169.9MB. Free memory was 126.2MB in the beginning and 75.9MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 37.57ms. Allocated memory is still 169.9MB. Free memory was 75.9MB in the beginning and 73.8MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=0, z=0] [L33] EXPR counter++ VAL [c=1, counter=1, counter++=0, x=1, y=0, z=0] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [counter=1, unknown-#in~cond-unknown=1] [L16] COND FALSE !(!(cond)) VAL [cond=1, counter=1, unknown-#in~cond-unknown=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, counter=1, x=1, y=0, z=0] [L36] COND TRUE !(c < k) VAL [c=1, counter=1, k=0, x=1, y=0, z=0] [L45] x = x * (z - 1) VAL [c=1, counter=1, k=0, x=4294967295, y=0, z=0] [L47] CALL __VERIFIER_assert(1 + x - y == 0) VAL [counter=1, unknown-#in~cond-unknown=0] [L16] COND TRUE !(cond) VAL [cond=0, counter=1, unknown-#in~cond-unknown=0] [L18] reach_error() VAL [cond=0, counter=1, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 1 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-23 01:45:28,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e19984f-103d-4740-9fb7-3a90fe660fc4/bin/uautomizer-QkZJyEgLgS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE