./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8 --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 d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f --- 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-2329fc7 [2022-12-13 11:07:21,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:07:21,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:07:21,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:07:21,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:07:21,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:07:21,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:07:21,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:07:21,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:07:21,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:07:21,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:07:21,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:07:21,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:07:21,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:07:21,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:07:21,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:07:21,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:07:21,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:07:21,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:07:21,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:07:21,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:07:21,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:07:21,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:07:21,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:07:21,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:07:21,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:07:21,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:07:21,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:07:21,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:07:21,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:07:21,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:07:21,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:07:21,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:07:21,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:07:21,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:07:21,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:07:21,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:07:21,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:07:21,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:07:21,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:07:21,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:07:21,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:07:21,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:07:21,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:07:21,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:07:21,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:07:21,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:07:21,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:07:21,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:07:21,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:07:21,082 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:07:21,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:07:21,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:07:21,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:07:21,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:07:21,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:07:21,085 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:07:21,085 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_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2022-12-13 11:07:21,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:07:21,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:07:21,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:07:21,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:07:21,265 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:07:21,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-12-13 11:07:23,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:07:23,945 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:07:23,945 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-12-13 11:07:23,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/data/5568a5f62/b4dcff1dea5f4c60a118b5343bb3607f/FLAG42440132a [2022-12-13 11:07:23,964 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/data/5568a5f62/b4dcff1dea5f4c60a118b5343bb3607f [2022-12-13 11:07:23,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:07:23,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:07:23,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:07:23,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:07:23,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:07:23,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:07:23" (1/1) ... [2022-12-13 11:07:23,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7513b07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:23, skipping insertion in model container [2022-12-13 11:07:23,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:07:23" (1/1) ... [2022-12-13 11:07:23,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:07:23,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:07:24,093 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_cec833fe-4149-4049-880a-eddb89a013bb/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-12-13 11:07:24,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:07:24,112 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:07:24,121 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_cec833fe-4149-4049-880a-eddb89a013bb/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-12-13 11:07:24,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:07:24,135 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:07:24,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24 WrapperNode [2022-12-13 11:07:24,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:07:24,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:07:24,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:07:24,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:07:24,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,159 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-12-13 11:07:24,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:07:24,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:07:24,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:07:24,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:07:24,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:07:24,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:07:24,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:07:24,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:07:24,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (1/1) ... [2022-12-13 11:07:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:07:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:24,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:07:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:07:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:07:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:07:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:07:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:07:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 11:07:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 11:07:24,291 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:07:24,293 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:07:24,389 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:07:24,393 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:07:24,393 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:07:24,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:07:24 BoogieIcfgContainer [2022-12-13 11:07:24,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:07:24,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:07:24,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:07:24,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:07:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:07:23" (1/3) ... [2022-12-13 11:07:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33555a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:07:24, skipping insertion in model container [2022-12-13 11:07:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:24" (2/3) ... [2022-12-13 11:07:24,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33555a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:07:24, skipping insertion in model container [2022-12-13 11:07:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:07:24" (3/3) ... [2022-12-13 11:07:24,402 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2022-12-13 11:07:24,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:07:24,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:07:24,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:07:24,461 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;@c237446, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:07:24,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:07:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-12-13 11:07:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:07:24,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:24,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:24,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-12-13 11:07:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503496303] [2022-12-13 11:07:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:24,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513295909] [2022-12-13 11:07:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:24,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:24,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:24,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:07:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:24,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:07:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:24,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:07:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503496303] [2022-12-13 11:07:24,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513295909] [2022-12-13 11:07:24,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513295909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:07:24,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:07:24,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:07:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717931979] [2022-12-13 11:07:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:07:24,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:07:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:07:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:07:24,797 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-12-13 11:07:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:24,917 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-12-13 11:07:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:07:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2022-12-13 11:07:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:24,927 INFO L225 Difference]: With dead ends: 54 [2022-12-13 11:07:24,927 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 11:07:24,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:07:24,934 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:24,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:07:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 11:07:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 11:07:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:07:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-13 11:07:24,963 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-12-13 11:07:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:24,964 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-13 11:07:24,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-12-13 11:07:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-13 11:07:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 11:07:24,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:24,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:24,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:07:25,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:25,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-12-13 11:07:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:25,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945019392] [2022-12-13 11:07:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:25,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:25,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801450208] [2022-12-13 11:07:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:25,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:25,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:25,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:25,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:07:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:25,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 11:07:25,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:25,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:25,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945019392] [2022-12-13 11:07:25,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:25,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801450208] [2022-12-13 11:07:25,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801450208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:25,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:07:25,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-12-13 11:07:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849272254] [2022-12-13 11:07:25,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:07:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:07:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:07:25,762 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:07:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:26,059 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-12-13 11:07:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:07:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-12-13 11:07:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:26,060 INFO L225 Difference]: With dead ends: 41 [2022-12-13 11:07:26,060 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 11:07:26,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:07:26,061 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:26,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:07:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 11:07:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-12-13 11:07:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:07:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-12-13 11:07:26,067 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-12-13 11:07:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:26,067 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-12-13 11:07:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:07:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-12-13 11:07:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 11:07:26,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:26,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:26,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 11:07:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 11:07:26,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:26,273 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-12-13 11:07:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:26,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190063596] [2022-12-13 11:07:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:26,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068319500] [2022-12-13 11:07:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:26,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:26,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:07:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:26,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:07:26,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:26,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190063596] [2022-12-13 11:07:26,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068319500] [2022-12-13 11:07:26,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068319500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:26,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:07:26,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-12-13 11:07:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105300558] [2022-12-13 11:07:26,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:26,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:07:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:07:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:07:26,417 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:07:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:26,473 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-12-13 11:07:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 11:07:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-12-13 11:07:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:26,475 INFO L225 Difference]: With dead ends: 73 [2022-12-13 11:07:26,475 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 11:07:26,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:07:26,477 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:26,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 106 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 11:07:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-12-13 11:07:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 11:07:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-12-13 11:07:26,488 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-12-13 11:07:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:26,488 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-12-13 11:07:26,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:07:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-12-13 11:07:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 11:07:26,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:26,489 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:26,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:07:26,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:26,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-12-13 11:07:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:26,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52221448] [2022-12-13 11:07:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:26,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:26,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132604422] [2022-12-13 11:07:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:26,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:26,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:07:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:26,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 11:07:26,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:07:26,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:07:27,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:27,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52221448] [2022-12-13 11:07:27,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:27,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132604422] [2022-12-13 11:07:27,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132604422] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:27,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:07:27,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2022-12-13 11:07:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377864176] [2022-12-13 11:07:27,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:07:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:27,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:07:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:07:27,321 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 11:07:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:28,028 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-12-13 11:07:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 11:07:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-12-13 11:07:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:28,029 INFO L225 Difference]: With dead ends: 65 [2022-12-13 11:07:28,030 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 11:07:28,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:07:28,031 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 78 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:07:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 11:07:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-12-13 11:07:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 11:07:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-13 11:07:28,042 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2022-12-13 11:07:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:28,042 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-13 11:07:28,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 11:07:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-13 11:07:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 11:07:28,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:28,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:28,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:07:28,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:28,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-12-13 11:07:28,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182850365] [2022-12-13 11:07:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:28,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:28,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408771013] [2022-12-13 11:07:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:28,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:28,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:28,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:28,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:07:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:28,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:07:28,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:28,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 11:07:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:28,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182850365] [2022-12-13 11:07:28,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:28,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408771013] [2022-12-13 11:07:28,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408771013] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:28,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:07:28,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-12-13 11:07:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472072131] [2022-12-13 11:07:28,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:28,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:07:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:07:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:07:28,439 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 11:07:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:28,560 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-12-13 11:07:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:07:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-12-13 11:07:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:28,561 INFO L225 Difference]: With dead ends: 116 [2022-12-13 11:07:28,561 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 11:07:28,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:07:28,563 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:28,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 166 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 11:07:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-12-13 11:07:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 11:07:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-12-13 11:07:28,586 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2022-12-13 11:07:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:28,587 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-12-13 11:07:28,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 11:07:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-12-13 11:07:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 11:07:28,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:28,590 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:28,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:07:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:28,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2022-12-13 11:07:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:28,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061753830] [2022-12-13 11:07:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:28,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:28,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750429550] [2022-12-13 11:07:28,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:07:28,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:28,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:28,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:28,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:07:28,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:07:28,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:28,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 11:07:28,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-13 11:07:29,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-13 11:07:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061753830] [2022-12-13 11:07:33,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:07:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750429550] [2022-12-13 11:07:33,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750429550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:33,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:07:33,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2022-12-13 11:07:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057087770] [2022-12-13 11:07:33,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 11:07:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 11:07:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2414, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 11:07:33,347 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 11:07:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:36,807 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2022-12-13 11:07:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 11:07:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 109 [2022-12-13 11:07:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:36,808 INFO L225 Difference]: With dead ends: 220 [2022-12-13 11:07:36,808 INFO L226 Difference]: Without dead ends: 212 [2022-12-13 11:07:36,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=619, Invalid=4073, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 11:07:36,810 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:36,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 511 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:07:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-12-13 11:07:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2022-12-13 11:07:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 160 states have (on average 1.125) internal successors, (180), 160 states have internal predecessors, (180), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:07:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2022-12-13 11:07:36,844 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 109 [2022-12-13 11:07:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:36,845 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2022-12-13 11:07:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 11:07:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2022-12-13 11:07:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 11:07:36,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:36,847 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:36,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:07:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:37,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash 977369872, now seen corresponding path program 1 times [2022-12-13 11:07:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:37,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978281757] [2022-12-13 11:07:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:37,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:07:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781081733] [2022-12-13 11:07:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:37,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:37,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:07:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:07:37,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:07:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:07:37,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:07:37,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:07:37,228 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 11:07:37,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 11:07:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:37,440 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-13 11:07:37,451 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:07:37,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:07:37 BoogieIcfgContainer [2022-12-13 11:07:37,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:07:37,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:07:37,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:07:37,522 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:07:37,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:07:24" (3/4) ... [2022-12-13 11:07:37,523 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 11:07:37,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:07:37,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:07:37,583 INFO L158 Benchmark]: Toolchain (without parser) took 13614.81ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 88.5MB in the beginning and 83.2MB in the end (delta: 5.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,583 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:07:37,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.87ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 77.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.33ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,584 INFO L158 Benchmark]: Boogie Preprocessor took 13.96ms. Allocated memory is still 125.8MB. Free memory was 76.0MB in the beginning and 75.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,584 INFO L158 Benchmark]: RCFGBuilder took 220.28ms. Allocated memory is still 125.8MB. Free memory was 75.0MB in the beginning and 64.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,585 INFO L158 Benchmark]: TraceAbstraction took 13124.16ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 64.0MB in the beginning and 88.5MB in the end (delta: -24.5MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,585 INFO L158 Benchmark]: Witness Printer took 60.79ms. Allocated memory is still 151.0MB. Free memory was 88.5MB in the beginning and 83.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:07:37,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.87ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 77.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.33ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.96ms. Allocated memory is still 125.8MB. Free memory was 76.0MB in the beginning and 75.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 220.28ms. Allocated memory is still 125.8MB. Free memory was 75.0MB in the beginning and 64.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13124.16ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 64.0MB in the beginning and 88.5MB in the end (delta: -24.5MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 60.79ms. Allocated memory is still 151.0MB. Free memory was 88.5MB in the beginning and 83.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-33, x=0, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-33, X=37, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-33, x=0, x=0, X=37, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-33, x=0, X=37, x=0, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-29, X=37, x=0, x=0, x=0, Y=2, y=0] [L45] x++ VAL [counter=1, v=-29, X=37, x=1, x=0, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-29, x=1, x=0, x=0, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-29, x=0, x=2, X=37, x=1, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-29, x=2, x=0, x=1, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-29, x=2, x=1, X=37, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-25, x=2, x=0, x=1, X=37, Y=2, y=0] [L45] x++ VAL [counter=2, v=-25, x=2, X=37, x=0, x=2, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-25, X=37, x=2, x=0, x=2, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-25, x=0, x=4, X=37, x=2, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-25, x=2, x=0, x=4, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-25, x=2, x=4, X=37, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-21, X=37, x=2, x=4, x=0, y=0, Y=2] [L45] x++ VAL [counter=3, v=-21, x=0, X=37, x=3, x=4, y=0, Y=2] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-21, x=3, x=0, x=4, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-21, x=6, x=3, x=0, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-21, x=0, x=6, X=37, x=3, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-21, x=0, X=37, x=3, x=6, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-17, X=37, x=6, x=0, x=3, y=0, Y=2] [L45] x++ VAL [counter=4, v=-17, x=0, X=37, x=4, x=6, Y=2, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-17, x=6, X=37, x=4, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-17, x=0, x=8, X=37, x=4, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=-17, X=37, x=0, x=8, x=4, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-17, X=37, x=8, x=0, x=4, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-13, x=4, X=37, x=0, x=8, y=0, Y=2] [L45] x++ VAL [counter=5, v=-13, x=8, x=0, X=37, x=5, Y=2, y=0] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-13, X=37, x=8, x=0, x=5, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-13, x=5, X=37, x=10, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-13, x=5, X=37, x=10, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-13, x=0, X=37, x=10, x=5, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-9, x=10, X=37, x=0, x=5, Y=2, y=0] [L45] x++ VAL [counter=6, v=-9, x=6, x=0, x=10, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-9, x=6, x=10, X=37, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-9, X=37, x=6, x=12, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-9, x=6, X=37, x=0, x=12, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-9, X=37, x=6, x=12, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-5, x=12, x=6, X=37, x=0, Y=2, y=0] [L45] x++ VAL [counter=7, v=-5, x=0, x=12, X=37, x=7, Y=2, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-5, X=37, x=0, x=7, x=12, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-5, x=7, x=14, X=37, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-5, X=37, x=7, x=0, x=14, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-5, x=14, x=7, x=0, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-1, x=7, x=0, x=14, X=37, Y=2, y=0] [L45] x++ VAL [counter=8, v=-1, x=0, X=37, x=8, x=14, Y=2, y=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-1, x=14, X=37, x=0, x=8, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-1, x=16, X=37, x=0, x=8, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-1, x=16, x=0, x=8, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-1, x=8, x=16, x=0, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=3, x=0, X=37, x=16, x=8, y=0, Y=2] [L45] x++ VAL [counter=9, v=3, X=37, x=0, x=9, x=16, Y=2, y=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=3, X=37, x=16, x=9, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=3, x=9, x=18, x=0, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=3, x=9, x=18, X=37, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=3, x=0, X=37, x=9, x=18, y=0, Y=2] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=10, v=-67, x=9, X=37, x=0, x=18, y=1, Y=2] [L45] x++ VAL [counter=10, v=-67, x=10, x=0, X=37, x=18, Y=2, y=1] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-67, X=37, x=0, x=18, x=10, Y=2, y=1] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-67, x=10, x=10, X=37, x=20, Y=2, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=11] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 989 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3290 IncrementalHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 108 mSDtfsCounter, 3290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=6, InterpolantAutomatonStates: 120, 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, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 3996 SizeOfPredicates, 30 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 464/1174 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! [2022-12-13 11:07:37,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec833fe-4149-4049-880a-eddb89a013bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE