./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/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_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/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_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/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 603eeec29f0f7a499f451ec7fa1906f0a8c90a729e0fc96740e12a91ea711946 --- 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 20:27:54,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:27:54,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:27:54,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:27:54,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:27:54,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:27:54,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:27:54,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:27:54,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:27:54,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:27:54,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:27:54,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:27:54,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:27:54,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:27:54,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:27:54,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:27:54,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:27:54,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:27:54,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:27:54,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:27:54,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:27:54,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:27:54,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:27:54,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:27:54,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:27:54,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:27:54,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:27:54,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:27:54,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:27:54,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:27:54,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:27:54,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:27:54,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:27:54,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:27:54,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:27:54,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:27:54,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:27:54,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:27:54,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:27:54,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:27:54,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:27:54,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:27:54,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:27:54,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:27:54,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:27:54,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:27:54,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:27:54,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:27:54,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:27:54,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:27:54,872 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:27:54,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:27:54,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:27:54,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:27:54,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:27:54,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:27:54,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:27:54,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:27:54,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:27:54,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:27:54,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:27:54,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:27:54,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:27:54,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:27:54,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:27:54,877 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:27:54,877 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_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 603eeec29f0f7a499f451ec7fa1906f0a8c90a729e0fc96740e12a91ea711946 [2022-12-13 20:27:55,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:27:55,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:27:55,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:27:55,092 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:27:55,093 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:27:55,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2022-12-13 20:27:57,664 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:27:57,838 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:27:57,838 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2022-12-13 20:27:57,843 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/data/2ae080a3a/2a083ceadb874d7eb0b43a16119dec67/FLAGb6a91e868 [2022-12-13 20:27:57,853 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/data/2ae080a3a/2a083ceadb874d7eb0b43a16119dec67 [2022-12-13 20:27:57,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:27:57,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:27:57,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:27:57,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:27:57,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:27:57,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:27:57" (1/1) ... [2022-12-13 20:27:57,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dbdca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:57, skipping insertion in model container [2022-12-13 20:27:57,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:27:57" (1/1) ... [2022-12-13 20:27:57,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:27:57,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:27:57,974 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_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c[537,550] [2022-12-13 20:27:57,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:27:57,992 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:27:58,000 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_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c[537,550] [2022-12-13 20:27:58,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:27:58,014 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:27:58,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58 WrapperNode [2022-12-13 20:27:58,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:27:58,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:27:58,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:27:58,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:27:58,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,038 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-13 20:27:58,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:27:58,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:27:58,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:27:58,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:27:58,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:27:58,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:27:58,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:27:58,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:27:58,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (1/1) ... [2022-12-13 20:27:58,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:27:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:27:58,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:27:58,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:27:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:27:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:27:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:27:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:27:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 20:27:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 20:27:58,163 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:27:58,165 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:27:58,302 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:27:58,308 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:27:58,308 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:27:58,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:27:58 BoogieIcfgContainer [2022-12-13 20:27:58,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:27:58,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:27:58,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:27:58,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:27:58,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:27:57" (1/3) ... [2022-12-13 20:27:58,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39702779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:27:58, skipping insertion in model container [2022-12-13 20:27:58,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:27:58" (2/3) ... [2022-12-13 20:27:58,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39702779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:27:58, skipping insertion in model container [2022-12-13 20:27:58,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:27:58" (3/3) ... [2022-12-13 20:27:58,320 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound2.c [2022-12-13 20:27:58,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:27:58,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:27:58,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:27:58,399 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;@2008a63c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:27:58,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:27:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 20:27:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 20:27:58,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:27:58,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:27:58,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:27:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:27:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2022-12-13 20:27:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:27:58,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484221979] [2022-12-13 20:27:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:27:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:58,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:27:58,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484221979] [2022-12-13 20:27:58,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:27:58,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279695686] [2022-12-13 20:27:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:58,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:27:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:27:58,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:27:58,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:27:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:58,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:27:58,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:27:58,638 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 20:27:58,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:27:58,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279695686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:27:58,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:27:58,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:27:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55902451] [2022-12-13 20:27:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:27:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:27:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:27:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:27:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:27:58,679 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 20:27:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:27:58,703 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2022-12-13 20:27:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:27:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 10 [2022-12-13 20:27:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:27:58,713 INFO L225 Difference]: With dead ends: 53 [2022-12-13 20:27:58,713 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 20:27:58,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:27:58,720 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:27:58,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:27:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 20:27:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 20:27:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:27:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2022-12-13 20:27:58,760 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2022-12-13 20:27:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:27:58,760 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2022-12-13 20:27:58,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 20:27:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2022-12-13 20:27:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 20:27:58,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:27:58,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:27:58,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:27:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 20:27:58,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:27:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:27:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1983932575, now seen corresponding path program 1 times [2022-12-13 20:27:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:27:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299033436] [2022-12-13 20:27:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:27:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,129 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 20:27:59,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:27:59,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299033436] [2022-12-13 20:27:59,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299033436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:27:59,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:27:59,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:27:59,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285910979] [2022-12-13 20:27:59,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:27:59,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:27:59,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:27:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:27:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:27:59,132 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 20:27:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:27:59,181 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2022-12-13 20:27:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:27:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2022-12-13 20:27:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:27:59,182 INFO L225 Difference]: With dead ends: 38 [2022-12-13 20:27:59,183 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 20:27:59,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:27:59,184 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:27:59,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 106 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:27:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 20:27:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-12-13 20:27:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:27:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-12-13 20:27:59,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2022-12-13 20:27:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:27:59,193 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-12-13 20:27:59,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 20:27:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-12-13 20:27:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:27:59,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:27:59,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:27:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:27:59,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:27:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:27:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1787143384, now seen corresponding path program 1 times [2022-12-13 20:27:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:27:59,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597953186] [2022-12-13 20:27:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:27:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:27:59,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597953186] [2022-12-13 20:27:59,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:27:59,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747925874] [2022-12-13 20:27:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:59,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:27:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:27:59,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:27:59,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:27:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:27:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:27:59,287 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 20:27:59,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:27:59,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747925874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:27:59,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:27:59,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:27:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33709749] [2022-12-13 20:27:59,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:27:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:27:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:27:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:27:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:27:59,289 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 20:27:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:27:59,304 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2022-12-13 20:27:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:27:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2022-12-13 20:27:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:27:59,306 INFO L225 Difference]: With dead ends: 44 [2022-12-13 20:27:59,306 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 20:27:59,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:27:59,308 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:27:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:27:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 20:27:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 20:27:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:27:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-12-13 20:27:59,313 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2022-12-13 20:27:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:27:59,313 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-12-13 20:27:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 20:27:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-12-13 20:27:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 20:27:59,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:27:59,314 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:27:59,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:27:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:27:59,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:27:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:27:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 472519838, now seen corresponding path program 1 times [2022-12-13 20:27:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:27:59,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507752158] [2022-12-13 20:27:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:27:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 20:27:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:27:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:27:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507752158] [2022-12-13 20:27:59,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507752158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:27:59,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:27:59,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:27:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148242804] [2022-12-13 20:27:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:27:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:27:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:27:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:27:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:27:59,768 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:27:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:27:59,815 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-12-13 20:27:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:27:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 20:27:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:27:59,816 INFO L225 Difference]: With dead ends: 44 [2022-12-13 20:27:59,817 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 20:27:59,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:27:59,818 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:27:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 102 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:27:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 20:27:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2022-12-13 20:27:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:27:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-12-13 20:27:59,826 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2022-12-13 20:27:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:27:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-12-13 20:27:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:27:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-12-13 20:27:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 20:27:59,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:27:59,827 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:27:59,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:27:59,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:27:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:27:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash 838495553, now seen corresponding path program 1 times [2022-12-13 20:27:59,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:27:59,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904186954] [2022-12-13 20:27:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:59,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:27:59,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:27:59,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336435386] [2022-12-13 20:27:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:27:59,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:27:59,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:27:59,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:27:59,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:27:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:27:59,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:27:59,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:27:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:27:59,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:28:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:28:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:28:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904186954] [2022-12-13 20:28:00,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:28:00,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336435386] [2022-12-13 20:28:00,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336435386] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:28:00,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:28:00,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-12-13 20:28:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869623705] [2022-12-13 20:28:00,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:28:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:28:00,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:28:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:28:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:28:00,197 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:28:02,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:28:04,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:28:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:28:04,927 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2022-12-13 20:28:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:28:04,928 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2022-12-13 20:28:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:28:04,929 INFO L225 Difference]: With dead ends: 78 [2022-12-13 20:28:04,929 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 20:28:04,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:28:04,930 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:28:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 121 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 225 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 20:28:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 20:28:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2022-12-13 20:28:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 41 states have internal predecessors, (47), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 20:28:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-12-13 20:28:04,939 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 20 [2022-12-13 20:28:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:28:04,939 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-12-13 20:28:04,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:28:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-12-13 20:28:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 20:28:04,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:28:04,940 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:04,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:28:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:05,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:28:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:28:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 414140572, now seen corresponding path program 1 times [2022-12-13 20:28:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:28:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528087221] [2022-12-13 20:28:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:28:05,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:28:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440866] [2022-12-13 20:28:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:05,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:28:05,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:28:05,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:28:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:28:05,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:28:05,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:28:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:28:05,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:28:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:28:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528087221] [2022-12-13 20:28:05,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:28:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440866] [2022-12-13 20:28:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:28:05,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:28:05,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:28:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406966689] [2022-12-13 20:28:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:28:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:28:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:28:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:28:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:28:05,260 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:28:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:28:05,286 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-12-13 20:28:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:28:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 20:28:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:28:05,288 INFO L225 Difference]: With dead ends: 76 [2022-12-13 20:28:05,288 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 20:28:05,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:28:05,289 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:28:05,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 99 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:28:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 20:28:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-13 20:28:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 47 states have internal predecessors, (52), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 20:28:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2022-12-13 20:28:05,302 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 28 [2022-12-13 20:28:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:28:05,303 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2022-12-13 20:28:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:28:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2022-12-13 20:28:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 20:28:05,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:28:05,304 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:05,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:28:05,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:28:05,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:28:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:28:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash 415868450, now seen corresponding path program 1 times [2022-12-13 20:28:05,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:28:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610133332] [2022-12-13 20:28:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:05,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:28:05,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:28:05,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757113144] [2022-12-13 20:28:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:28:05,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:28:05,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:28:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:28:05,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:28:05,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:28:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:28:05,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:28:05,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:28:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610133332] [2022-12-13 20:28:05,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:28:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757113144] [2022-12-13 20:28:05,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757113144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:28:05,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:28:05,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:28:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60072026] [2022-12-13 20:28:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:28:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:28:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:28:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:28:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:28:05,735 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:28:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:28:06,491 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2022-12-13 20:28:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:28:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 20:28:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:28:06,492 INFO L225 Difference]: With dead ends: 75 [2022-12-13 20:28:06,492 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 20:28:06,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:28:06,493 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:28:06,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 103 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:28:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 20:28:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 20:28:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.2) internal successors, (48), 43 states have internal predecessors, (48), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 20:28:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-12-13 20:28:06,501 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 28 [2022-12-13 20:28:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:28:06,501 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-12-13 20:28:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:28:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-12-13 20:28:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 20:28:06,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:28:06,501 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:06,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 20:28:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:06,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:28:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:28:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1040101153, now seen corresponding path program 1 times [2022-12-13 20:28:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:28:06,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512476865] [2022-12-13 20:28:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:28:06,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:28:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699267382] [2022-12-13 20:28:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:28:06,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:28:06,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:28:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:28:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:28:06,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:28:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:28:06,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:28:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:28:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:28:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512476865] [2022-12-13 20:28:06,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:28:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699267382] [2022-12-13 20:28:06,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699267382] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:28:06,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:28:06,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-12-13 20:28:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631452594] [2022-12-13 20:28:06,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:28:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:28:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:28:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:28:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:28:06,847 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 20:28:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:28:06,905 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2022-12-13 20:28:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:28:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 30 [2022-12-13 20:28:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:28:06,906 INFO L225 Difference]: With dead ends: 85 [2022-12-13 20:28:06,906 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 20:28:06,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:28:06,906 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:28:06,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:28:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 20:28:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 20:28:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.175) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 20:28:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-12-13 20:28:06,914 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 30 [2022-12-13 20:28:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:28:06,914 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-12-13 20:28:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 20:28:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-12-13 20:28:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 20:28:06,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:28:06,915 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:06,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:28:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:07,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:28:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:28:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2101649637, now seen corresponding path program 1 times [2022-12-13 20:28:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:28:07,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16155673] [2022-12-13 20:28:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:07,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:28:07,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:28:07,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112860311] [2022-12-13 20:28:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:07,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:28:07,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:28:07,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:28:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:28:07,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 20:28:07,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:28:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:28:07,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:28:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:28:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16155673] [2022-12-13 20:28:07,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:28:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112860311] [2022-12-13 20:28:07,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112860311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:28:07,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:28:07,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-12-13 20:28:07,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489842460] [2022-12-13 20:28:07,381 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 20:28:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:28:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:28:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:28:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:28:07,382 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:28:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:28:07,619 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2022-12-13 20:28:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:28:07,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-12-13 20:28:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:28:07,621 INFO L225 Difference]: With dead ends: 77 [2022-12-13 20:28:07,621 INFO L226 Difference]: Without dead ends: 75 [2022-12-13 20:28:07,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:28:07,622 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:28:07,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:28:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-13 20:28:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-12-13 20:28:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 51 states have internal predecessors, (57), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 20:28:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-12-13 20:28:07,630 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 46 [2022-12-13 20:28:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:28:07,630 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-12-13 20:28:07,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:28:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-12-13 20:28:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 20:28:07,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:28:07,631 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:07,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:28:07,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:07,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:28:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:28:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash -785132454, now seen corresponding path program 1 times [2022-12-13 20:28:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:28:07,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847278296] [2022-12-13 20:28:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:07,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:28:07,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:28:07,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759395014] [2022-12-13 20:28:07,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:28:07,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:28:07,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:28:07,839 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:28:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:28:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:28:07,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:28:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:28:07,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:28:07,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:28:07,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 20:28:07,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:28:08,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:28:08,138 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:28:08,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:28:08,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:28:08 BoogieIcfgContainer [2022-12-13 20:28:08,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:28:08,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:28:08,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:28:08,189 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:28:08,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:27:58" (3/4) ... [2022-12-13 20:28:08,191 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 20:28:08,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:28:08,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:28:08,219 INFO L158 Benchmark]: Toolchain (without parser) took 10362.74ms. Allocated memory was 136.3MB in the beginning and 216.0MB in the end (delta: 79.7MB). Free memory was 102.4MB in the beginning and 165.8MB in the end (delta: -63.4MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-12-13 20:28:08,219 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:28:08,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.89ms. Allocated memory is still 136.3MB. Free memory was 102.0MB in the beginning and 91.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:28:08,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.33ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 90.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:28:08,220 INFO L158 Benchmark]: Boogie Preprocessor took 17.41ms. Allocated memory is still 136.3MB. Free memory was 90.0MB in the beginning and 88.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:28:08,220 INFO L158 Benchmark]: RCFGBuilder took 254.03ms. Allocated memory is still 136.3MB. Free memory was 88.6MB in the beginning and 77.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:28:08,220 INFO L158 Benchmark]: TraceAbstraction took 9875.53ms. Allocated memory was 136.3MB in the beginning and 216.0MB in the end (delta: 79.7MB). Free memory was 76.5MB in the beginning and 168.9MB in the end (delta: -92.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:28:08,221 INFO L158 Benchmark]: Witness Printer took 29.86ms. Allocated memory is still 216.0MB. Free memory was 168.9MB in the beginning and 165.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:28:08,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.89ms. Allocated memory is still 136.3MB. Free memory was 102.0MB in the beginning and 91.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.33ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 90.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.41ms. Allocated memory is still 136.3MB. Free memory was 90.0MB in the beginning and 88.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.03ms. Allocated memory is still 136.3MB. Free memory was 88.6MB in the beginning and 77.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9875.53ms. Allocated memory was 136.3MB in the beginning and 216.0MB in the end (delta: 79.7MB). Free memory was 76.5MB in the beginning and 168.9MB in the end (delta: -92.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.86ms. Allocated memory is still 216.0MB. Free memory was 168.9MB in the beginning and 165.8MB in the end (delta: 3.1MB). 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(B >= 1) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(B >= 1) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [A=-4294967295, B=-4294967295, counter=0, d=-4294967295, p=1, q=0, r=-4294967295] [L35] EXPR counter++ VAL [A=-4294967295, B=-4294967295, counter=1, counter++=0, d=-4294967295, p=1, q=0, r=-4294967295] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(q == 0) VAL [A=-4294967295, B=-4294967295, counter=1, d=-4294967295, p=1, q=0, r=-4294967295] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(r == A) VAL [A=-4294967295, B=-4294967295, counter=1, d=-4294967295, p=1, q=0, r=-4294967295] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=-4294967295, B=-4294967295, counter=1, d=-4294967295, p=1, q=0, r=-4294967295] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=-4294967295, B=-4294967295, counter=1, d=-8589934590, p=2, q=0, r=-4294967295] [L35] EXPR counter++ VAL [A=-4294967295, B=-4294967295, counter=2, counter++=1, d=-8589934590, p=2, q=0, r=-4294967295] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(q == 0) VAL [A=-4294967295, B=-4294967295, counter=2, d=-8589934590, p=2, q=0, r=-4294967295] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(r == A) VAL [A=-4294967295, B=-4294967295, counter=2, d=-8589934590, p=2, q=0, r=-4294967295] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=-4294967295, B=-4294967295, counter=2, d=-8589934590, p=2, q=0, r=-4294967295] [L39] COND TRUE !(r >= d) VAL [A=-4294967295, B=-4294967295, counter=2, d=-8589934590, p=2, q=0, r=-4294967295] [L45] EXPR counter++ VAL [A=-4294967295, B=-4294967295, counter=3, counter++=2, d=-8589934590, p=2, q=0, r=-4294967295] [L45] COND FALSE !(counter++<2) [L59] CALL __VERIFIER_assert(A == d*q + r) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L59] RET __VERIFIER_assert(A == d*q + r) VAL [A=-4294967295, B=-4294967295, counter=3, d=-8589934590, p=2, q=0, r=-4294967295] [L60] CALL __VERIFIER_assert(B == d) VAL [\old(cond)=0, counter=3] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L17] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 833 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 553 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 510 IncrementalHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 280 mSDtfsCounter, 510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 195 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=9, InterpolantAutomatonStates: 52, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 12 NumberOfNonLiveVariables, 576 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 153/172 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 20:28:08,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c9e57c-ae01-47d3-9f1c-9c4469b2d2b6/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