./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 04:12:04,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:12:04,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:12:04,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:12:04,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:12:04,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:12:04,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:12:04,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:12:04,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:12:04,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:12:04,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:12:04,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:12:04,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:12:04,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:12:04,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:12:04,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:12:04,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:12:04,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:12:04,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:12:04,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:12:04,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:12:04,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:12:04,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:12:04,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:12:04,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:12:04,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:12:04,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:12:04,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:12:04,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:12:04,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:12:04,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:12:04,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:12:04,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:12:04,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:12:04,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:12:04,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:12:04,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:12:04,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:12:04,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:12:04,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:12:04,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:12:04,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:12:05,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:12:05,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:12:05,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:12:05,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:12:05,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:12:05,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:12:05,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:12:05,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:12:05,030 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:12:05,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:12:05,031 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:12:05,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:12:05,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:12:05,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:12:05,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:12:05,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:12:05,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:12:05,033 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:12:05,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:12:05,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:12:05,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:12:05,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:12:05,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:12:05,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:12:05,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:12:05,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:12:05,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:12:05,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:12:05,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:12:05,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:12:05,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:12:05,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:12:05,038 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:12:05,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:12:05,039 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_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2022-11-23 04:12:05,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:12:05,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:12:05,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:12:05,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:12:05,430 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:12:05,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2022-11-23 04:12:09,282 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:12:09,687 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:12:09,688 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2022-11-23 04:12:09,696 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/data/eda7f3e06/194440ea31254556a0d5fc70fdc70ff4/FLAG9408cbb08 [2022-11-23 04:12:09,717 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/data/eda7f3e06/194440ea31254556a0d5fc70fdc70ff4 [2022-11-23 04:12:09,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:12:09,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:12:09,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:12:09,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:12:09,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:12:09,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:09" (1/1) ... [2022-11-23 04:12:09,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b97942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:09, skipping insertion in model container [2022-11-23 04:12:09,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:09" (1/1) ... [2022-11-23 04:12:09,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:12:09,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:12:09,965 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_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-11-23 04:12:09,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:12:09,998 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:12:10,016 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_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-11-23 04:12:10,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:12:10,037 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:12:10,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10 WrapperNode [2022-11-23 04:12:10,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:12:10,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:12:10,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:12:10,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:12:10,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,078 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-23 04:12:10,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:12:10,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:12:10,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:12:10,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:12:10,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:12:10,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:12:10,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:12:10,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:12:10,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (1/1) ... [2022-11-23 04:12:10,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:12:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:10,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:12:10,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:12:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:12:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:12:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:12:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:12:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 04:12:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 04:12:10,306 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:12:10,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:12:10,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:12:10,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:12:10,605 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 04:12:10,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:10 BoogieIcfgContainer [2022-11-23 04:12:10,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:12:10,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:12:10,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:12:10,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:12:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:09" (1/3) ... [2022-11-23 04:12:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3385820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:10, skipping insertion in model container [2022-11-23 04:12:10,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:10" (2/3) ... [2022-11-23 04:12:10,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3385820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:10, skipping insertion in model container [2022-11-23 04:12:10,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:10" (3/3) ... [2022-11-23 04:12:10,635 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2022-11-23 04:12:10,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:12:10,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:12:10,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:12:10,781 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;@54a5762f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:12:10,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 04:12:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2022-11-23 04:12:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 04:12:10,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:10,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:10,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2022-11-23 04:12:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850967199] [2022-11-23 04:12:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:11,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850967199] [2022-11-23 04:12:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850967199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:12:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740213265] [2022-11-23 04:12:11,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 04:12:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 04:12:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 04:12:11,197 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:11,237 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2022-11-23 04:12:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 04:12:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 04:12:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:11,256 INFO L225 Difference]: With dead ends: 49 [2022-11-23 04:12:11,257 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 04:12:11,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 04:12:11,271 INFO L413 NwaCegarLoop]: 34 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, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:11,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:12:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 04:12:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 04:12:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2022-11-23 04:12:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-23 04:12:11,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2022-11-23 04:12:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:11,339 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-23 04:12:11,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-23 04:12:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 04:12:11,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:11,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:12:11,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2022-11-23 04:12:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:11,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275284398] [2022-11-23 04:12:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:11,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:11,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275284398] [2022-11-23 04:12:11,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275284398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:11,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:11,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:11,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689519785] [2022-11-23 04:12:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:12:11,641 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:11,742 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-11-23 04:12:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:12:11,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 04:12:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:11,745 INFO L225 Difference]: With dead ends: 35 [2022-11-23 04:12:11,745 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 04:12:11,746 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 [2022-11-23 04:12:11,748 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:11,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:12:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 04:12:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-11-23 04:12:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-11-23 04:12:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-23 04:12:11,762 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2022-11-23 04:12:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:11,763 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-23 04:12:11,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-23 04:12:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 04:12:11,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:11,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:12:11,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2022-11-23 04:12:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:11,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705059994] [2022-11-23 04:12:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 04:12:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:12,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705059994] [2022-11-23 04:12:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705059994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:12,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:12,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533595354] [2022-11-23 04:12:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:12:12,042 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 04:12:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:12,141 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-23 04:12:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:12:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2022-11-23 04:12:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:12,144 INFO L225 Difference]: With dead ends: 39 [2022-11-23 04:12:12,144 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 04:12:12,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:12:12,147 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:12,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:12:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 04:12:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-11-23 04:12:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-23 04:12:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-23 04:12:12,168 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2022-11-23 04:12:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:12,169 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-23 04:12:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 04:12:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-23 04:12:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 04:12:12,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:12,173 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:12,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 04:12:12,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2022-11-23 04:12:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:12,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541099158] [2022-11-23 04:12:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:12,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636027497] [2022-11-23 04:12:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:12,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:12,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:12,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:12:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:12,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 04:12:12,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:12:12,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:12:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541099158] [2022-11-23 04:12:12,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636027497] [2022-11-23 04:12:12,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636027497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:12,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:12,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-23 04:12:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433086470] [2022-11-23 04:12:12,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 04:12:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 04:12:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-23 04:12:12,961 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-23 04:12:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:13,344 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-11-23 04:12:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 04:12:13,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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 19 [2022-11-23 04:12:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:13,351 INFO L225 Difference]: With dead ends: 65 [2022-11-23 04:12:13,351 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 04:12:13,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-23 04:12:13,366 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:13,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 60 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:12:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 04:12:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-23 04:12:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 04:12:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-23 04:12:13,399 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2022-11-23 04:12:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:13,400 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-23 04:12:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-23 04:12:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-23 04:12:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 04:12:13,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:13,404 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:13,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 04:12:13,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:13,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2022-11-23 04:12:13,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:13,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845352816] [2022-11-23 04:12:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:13,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:13,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:13,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973439177] [2022-11-23 04:12:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:13,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:13,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:13,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:12:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:13,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 04:12:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 04:12:13,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 04:12:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845352816] [2022-11-23 04:12:14,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973439177] [2022-11-23 04:12:14,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973439177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:14,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-23 04:12:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670580961] [2022-11-23 04:12:14,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 04:12:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:14,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 04:12:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 04:12:14,160 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 04:12:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:14,382 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-23 04:12:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 04:12:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2022-11-23 04:12:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:14,385 INFO L225 Difference]: With dead ends: 66 [2022-11-23 04:12:14,385 INFO L226 Difference]: Without dead ends: 59 [2022-11-23 04:12:14,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-23 04:12:14,387 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:14,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 04:12:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-23 04:12:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-23 04:12:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 04:12:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-11-23 04:12:14,405 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2022-11-23 04:12:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:14,406 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-11-23 04:12:14,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 04:12:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-11-23 04:12:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 04:12:14,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:14,408 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:14,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 04:12:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:14,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2022-11-23 04:12:14,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:14,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632144980] [2022-11-23 04:12:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:14,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:14,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636979631] [2022-11-23 04:12:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:14,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:14,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:14,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 04:12:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:14,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 04:12:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 04:12:15,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 04:12:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:16,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632144980] [2022-11-23 04:12:16,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:16,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636979631] [2022-11-23 04:12:16,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636979631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:16,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:16,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-23 04:12:16,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110270118] [2022-11-23 04:12:16,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:16,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 04:12:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 04:12:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-23 04:12:16,971 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-23 04:12:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:22,909 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2022-11-23 04:12:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 04:12:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2022-11-23 04:12:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:22,912 INFO L225 Difference]: With dead ends: 142 [2022-11-23 04:12:22,912 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 04:12:22,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:12:22,914 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:22,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 94 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 04:12:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 04:12:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2022-11-23 04:12:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-23 04:12:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2022-11-23 04:12:22,984 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2022-11-23 04:12:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:22,985 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2022-11-23 04:12:22,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-23 04:12:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2022-11-23 04:12:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 04:12:22,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:22,998 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:23,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:23,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:23,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2022-11-23 04:12:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:23,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74619962] [2022-11-23 04:12:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:23,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:23,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:23,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778437228] [2022-11-23 04:12:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:23,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:23,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:23,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 04:12:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:23,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 04:12:23,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-23 04:12:23,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-23 04:12:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:24,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74619962] [2022-11-23 04:12:24,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:24,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778437228] [2022-11-23 04:12:24,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778437228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:24,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:24,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-23 04:12:24,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027031070] [2022-11-23 04:12:24,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 04:12:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 04:12:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-23 04:12:24,476 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-23 04:12:27,479 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 [] [2022-11-23 04:12:29,755 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 [] [2022-11-23 04:12:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:29,829 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2022-11-23 04:12:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 04:12:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2022-11-23 04:12:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:29,836 INFO L225 Difference]: With dead ends: 161 [2022-11-23 04:12:29,836 INFO L226 Difference]: Without dead ends: 123 [2022-11-23 04:12:29,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:12:29,837 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 409 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 04:12:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-23 04:12:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2022-11-23 04:12:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 04:12:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2022-11-23 04:12:29,939 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2022-11-23 04:12:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:29,940 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2022-11-23 04:12:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-23 04:12:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2022-11-23 04:12:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 04:12:29,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:29,944 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:29,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:30,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2022-11-23 04:12:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:30,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966791517] [2022-11-23 04:12:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:30,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:30,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553792245] [2022-11-23 04:12:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:30,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:30,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:30,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 04:12:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:30,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 04:12:30,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 04:12:30,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 04:12:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966791517] [2022-11-23 04:12:31,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553792245] [2022-11-23 04:12:31,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553792245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:31,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-23 04:12:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542744225] [2022-11-23 04:12:31,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 04:12:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 04:12:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 04:12:31,192 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-23 04:12:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:31,978 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2022-11-23 04:12:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 04:12:31,979 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 72 [2022-11-23 04:12:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:31,981 INFO L225 Difference]: With dead ends: 117 [2022-11-23 04:12:31,981 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 04:12:31,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:12:31,982 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:31,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 92 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 04:12:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 04:12:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-23 04:12:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 57 states have internal predecessors, (60), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 04:12:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2022-11-23 04:12:32,030 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 72 [2022-11-23 04:12:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:32,031 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2022-11-23 04:12:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-23 04:12:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2022-11-23 04:12:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 04:12:32,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:32,035 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:32,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 04:12:32,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2022-11-23 04:12:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:32,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057008979] [2022-11-23 04:12:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:32,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:32,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714548879] [2022-11-23 04:12:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:32,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:32,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:32,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 04:12:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:12:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-23 04:12:32,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:12:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057008979] [2022-11-23 04:12:32,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714548879] [2022-11-23 04:12:32,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714548879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:32,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:32,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 04:12:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124250325] [2022-11-23 04:12:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 04:12:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 04:12:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:12:32,572 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 04:12:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:32,897 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2022-11-23 04:12:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:12:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-11-23 04:12:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:32,900 INFO L225 Difference]: With dead ends: 116 [2022-11-23 04:12:32,900 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 04:12:32,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:12:32,902 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:32,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:12:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 04:12:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2022-11-23 04:12:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 04:12:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-23 04:12:32,936 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 86 [2022-11-23 04:12:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:32,936 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-23 04:12:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 04:12:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-23 04:12:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 04:12:32,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:32,938 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:32,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:33,145 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2022-11-23 04:12:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973619752] [2022-11-23 04:12:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:33,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390887061] [2022-11-23 04:12:33,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:12:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:33,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:33,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 04:12:33,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:12:33,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:12:33,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 04:12:33,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-23 04:12:33,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-23 04:12:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973619752] [2022-11-23 04:12:34,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:12:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390887061] [2022-11-23 04:12:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390887061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:34,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:12:34,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-23 04:12:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224077997] [2022-11-23 04:12:34,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:12:34,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:12:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:12:34,976 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-23 04:12:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:35,654 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2022-11-23 04:12:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 04:12:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 86 [2022-11-23 04:12:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:35,657 INFO L225 Difference]: With dead ends: 124 [2022-11-23 04:12:35,657 INFO L226 Difference]: Without dead ends: 76 [2022-11-23 04:12:35,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-11-23 04:12:35,659 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:35,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 134 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 04:12:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-23 04:12:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-23 04:12:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 04:12:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2022-11-23 04:12:35,701 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 86 [2022-11-23 04:12:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:35,701 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2022-11-23 04:12:35,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-23 04:12:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2022-11-23 04:12:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 04:12:35,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:35,711 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:35,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 04:12:35,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 2 times [2022-11-23 04:12:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:35,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842522916] [2022-11-23 04:12:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:35,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:12:35,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648849395] [2022-11-23 04:12:35,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:12:35,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:35,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:35,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 04:12:36,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:12:36,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:12:36,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 04:12:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-23 04:12:36,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:13:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-23 04:13:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:15,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842522916] [2022-11-23 04:13:15,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:13:15,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648849395] [2022-11-23 04:13:15,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648849395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:13:15,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:13:15,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-23 04:13:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617145468] [2022-11-23 04:13:15,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:13:15,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 04:13:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 04:13:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-11-23 04:13:15,918 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-23 04:13:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:16,813 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2022-11-23 04:13:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 04:13:16,814 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 91 [2022-11-23 04:13:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:16,815 INFO L225 Difference]: With dead ends: 86 [2022-11-23 04:13:16,815 INFO L226 Difference]: Without dead ends: 82 [2022-11-23 04:13:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-23 04:13:16,817 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:16,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 162 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 04:13:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-23 04:13:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-23 04:13:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 04:13:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2022-11-23 04:13:16,850 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 91 [2022-11-23 04:13:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:16,851 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2022-11-23 04:13:16,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-23 04:13:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2022-11-23 04:13:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 04:13:16,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:16,853 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:16,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 04:13:17,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 04:13:17,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2022-11-23 04:13:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231294380] [2022-11-23 04:13:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:17,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:13:17,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937765820] [2022-11-23 04:13:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:17,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:13:17,094 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:13:17,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 04:13:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:17,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 04:13:17,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:13:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 67 proven. 69 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-23 04:13:17,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:13:33,133 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:13:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:33,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231294380] [2022-11-23 04:13:33,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:13:33,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937765820] [2022-11-23 04:13:33,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937765820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:13:33,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:13:33,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-23 04:13:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944860787] [2022-11-23 04:13:33,636 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 04:13:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 04:13:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 04:13:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=339, Unknown=1, NotChecked=0, Total=420 [2022-11-23 04:13:33,638 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-23 04:13:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:34,217 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2022-11-23 04:13:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 04:13:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2022-11-23 04:13:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:34,221 INFO L225 Difference]: With dead ends: 82 [2022-11-23 04:13:34,221 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 04:13:34,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=106, Invalid=445, Unknown=1, NotChecked=0, Total=552 [2022-11-23 04:13:34,222 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:34,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:13:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 04:13:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 04:13:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 04:13:34,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2022-11-23 04:13:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:34,224 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 04:13:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-23 04:13:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 04:13:34,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 04:13:34,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 04:13:34,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 04:13:34,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 04:13:34,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 04:13:49,622 WARN L233 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 112 DAG size of output: 14 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-23 04:13:50,728 INFO L902 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2022-11-23 04:13:50,729 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-11-23 04:13:50,729 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 22 61) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 (= |ULTIMATE.start_main_~A~0#1| (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2022-11-23 04:13:50,729 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-23 04:13:50,730 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) [2022-11-23 04:13:50,730 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2022-11-23 04:13:50,730 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 04:13:50,731 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 04:13:50,731 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 04:13:50,731 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 (= |ULTIMATE.start_main_~A~0#1| (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2022-11-23 04:13:50,731 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-23 04:13:50,732 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse1 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse6 (<= (+ (* 2 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2022-11-23 04:13:50,732 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2022-11-23 04:13:50,732 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 04:13:50,732 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|))) (or (and .cse0 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)))) [2022-11-23 04:13:50,733 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2022-11-23 04:13:50,733 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2022-11-23 04:13:50,733 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-11-23 04:13:50,733 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2022-11-23 04:13:50,734 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2022-11-23 04:13:50,734 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-23 04:13:50,734 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-23 04:13:50,734 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-23 04:13:50,735 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-23 04:13:50,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-23 04:13:50,735 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-23 04:13:50,742 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:50,745 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 04:13:50,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:13:50 BoogieIcfgContainer [2022-11-23 04:13:50,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 04:13:50,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 04:13:50,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 04:13:50,776 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 04:13:50,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:10" (3/4) ... [2022-11-23 04:13:50,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 04:13:50,788 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 04:13:50,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-23 04:13:50,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-23 04:13:50,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 04:13:50,794 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 04:13:50,794 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 04:13:50,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 04:13:50,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 04:13:50,837 INFO L158 Benchmark]: Toolchain (without parser) took 101106.82ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 158.9MB in the beginning and 235.1MB in the end (delta: -76.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,838 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory was 66.8MB in the beginning and 66.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 04:13:50,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.65ms. Allocated memory is still 190.8MB. Free memory was 158.9MB in the beginning and 148.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.94ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 146.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,839 INFO L158 Benchmark]: Boogie Preprocessor took 29.21ms. Allocated memory is still 190.8MB. Free memory was 146.6MB in the beginning and 145.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,840 INFO L158 Benchmark]: RCFGBuilder took 503.74ms. Allocated memory is still 190.8MB. Free memory was 145.4MB in the beginning and 133.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,840 INFO L158 Benchmark]: TraceAbstraction took 100158.66ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 133.7MB in the beginning and 238.2MB in the end (delta: -104.5MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,841 INFO L158 Benchmark]: Witness Printer took 60.86ms. Allocated memory is still 276.8MB. Free memory was 238.2MB in the beginning and 235.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 04:13:50,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory was 66.8MB in the beginning and 66.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.65ms. Allocated memory is still 190.8MB. Free memory was 158.9MB in the beginning and 148.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.94ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 146.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.21ms. Allocated memory is still 190.8MB. Free memory was 146.6MB in the beginning and 145.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.74ms. Allocated memory is still 190.8MB. Free memory was 145.4MB in the beginning and 133.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 100158.66ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 133.7MB in the beginning and 238.2MB in the end (delta: -104.5MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. * Witness Printer took 60.86ms. Allocated memory is still 276.8MB. Free memory was 238.2MB in the beginning and 235.1MB 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 100.0s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 1149 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 507 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2536 IncrementalHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 507 mSolverCounterUnsat, 349 mSDtfsCounter, 2536 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 920 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 23.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 92 PreInvPairs, 132 NumberOfFragments, 930 HoareAnnotationTreeSize, 92 FomulaSimplifications, 239 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 7559 FormulaSimplificationTreeSizeReductionInter, 16.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 64.1s InterpolantComputationTime, 632 NumberOfCodeBlocks, 632 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 14168 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 250 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 3205/3644 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && A <= 2) && B * p == d) && A == r) && d == 4) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && d / 2 <= r) || ((((p == 1 && B == d) && q == 0) && A == r) && B == 1)) || ((((((((cond == 1 && A == B * q + r) && p == 1) && B == d) && 0 <= r) && r <= 0) && q <= 2) && B == 1) && 0 <= A)) || ((((B + r == A && B == d) && p == q) && q == 1) && B == 1)) || ((((q == 0 && B * p == d) && A == r) && B == 1) && 2 == d)) || (((((((cond == 1 && A + d == B * q + B * p + r) && 2 == p) && 2 * B <= d + r) && A <= 2) && d + r <= A) && B == 1) && 2 == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && A <= 2) && B * p == d) && A == r) && d == 4) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && d / 2 <= r) || (((((((cond == 1 && q == 0) && A <= 2) && B * p == d) && A == r) && B == 1) && 0 <= A) && 2 == d)) || (((((((cond == 1 && p == 1) && B == d) && q == 0) && A <= 2) && A == r) && B == 1) && 0 <= A) RESULT: Ultimate proved your program to be correct! [2022-11-23 04:13:50,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8edcdd-bfc5-4a93-b83b-ed1552e91e3e/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE