./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- 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-6b4ec56 [2022-11-20 11:09:53,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:09:53,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:09:53,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:09:53,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:09:53,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:09:53,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:09:53,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:09:53,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:09:53,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:09:53,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:09:53,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:09:53,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:09:53,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:09:53,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:09:53,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:09:53,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:09:53,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:09:53,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:09:53,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:09:53,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:09:53,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:09:53,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:09:53,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:09:53,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:09:53,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:09:53,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:09:53,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:09:53,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:09:53,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:09:53,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:09:54,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:09:54,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:09:54,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:09:54,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:09:54,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:09:54,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:09:54,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:09:54,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:09:54,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:09:54,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:09:54,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:09:54,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:09:54,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:09:54,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:09:54,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:09:54,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:09:54,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:09:54,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:09:54,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:09:54,067 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:09:54,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:09:54,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:09:54,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:09:54,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:09:54,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:09:54,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:09:54,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:09:54,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:09:54,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:09:54,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:09:54,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:09:54,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:09:54,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:09:54,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:09:54,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:09:54,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:54,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:09:54,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:09:54,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:09:54,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:09:54,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:09:54,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:09:54,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:09:54,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:09:54,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2022-11-20 11:09:54,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:09:54,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:09:54,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:09:54,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:09:54,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:09:54,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-20 11:09:58,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:09:58,408 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:09:58,408 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-20 11:09:58,417 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/data/ce391fdd3/7d1076ea097843818655fa5d506efbf9/FLAG587978077 [2022-11-20 11:09:58,434 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/data/ce391fdd3/7d1076ea097843818655fa5d506efbf9 [2022-11-20 11:09:58,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:09:58,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:09:58,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:58,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:09:58,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:09:58,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339824b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58, skipping insertion in model container [2022-11-20 11:09:58,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:09:58,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:09:58,679 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_a184714f-a8ce-48ec-9ee5-5175db125b47/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-20 11:09:58,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:58,736 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:09:58,749 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_a184714f-a8ce-48ec-9ee5-5175db125b47/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-20 11:09:58,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:58,793 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:09:58,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58 WrapperNode [2022-11-20 11:09:58,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:58,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:58,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:09:58,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:09:58,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,855 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-20 11:09:58,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:58,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:09:58,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:09:58,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:09:58,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:09:58,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:09:58,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:09:58,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:09:58,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (1/1) ... [2022-11-20 11:09:58,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:58,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:58,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:09:58,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:09:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:09:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:09:58,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:09:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:09:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:09:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:09:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:09:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:09:59,082 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:09:59,085 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:09:59,276 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:09:59,284 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:09:59,284 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:09:59,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:59 BoogieIcfgContainer [2022-11-20 11:09:59,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:09:59,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:09:59,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:09:59,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:09:59,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:09:58" (1/3) ... [2022-11-20 11:09:59,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2cf0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:59, skipping insertion in model container [2022-11-20 11:09:59,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:58" (2/3) ... [2022-11-20 11:09:59,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2cf0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:59, skipping insertion in model container [2022-11-20 11:09:59,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:59" (3/3) ... [2022-11-20 11:09:59,312 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-11-20 11:09:59,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:09:59,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:09:59,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:59,461 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3478ef1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:59,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:09:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:09:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:09:59,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:59,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:59,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2022-11-20 11:09:59,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:59,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420254671] [2022-11-20 11:09:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:59,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:59,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420254671] [2022-11-20 11:09:59,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:09:59,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821202954] [2022-11-20 11:09:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:59,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:59,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:59,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:09:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:09:59,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:09:59,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:59,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821202954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:59,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:59,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:59,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626831472] [2022-11-20 11:09:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:59,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:09:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:09:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:09:59,959 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:00,006 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2022-11-20 11:10:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:10:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-20 11:10:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:00,017 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:10:00,017 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:10:00,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:10:00,026 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2022-11-20 11:10:00,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:10:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:10:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 11:10:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:10:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-20 11:10:00,099 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2022-11-20 11:10:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:00,100 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-20 11:10:00,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-20 11:10:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:10:00,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:00,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:00,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:00,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:00,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2022-11-20 11:10:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:00,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437695857] [2022-11-20 11:10:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:00,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:00,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544272727] [2022-11-20 11:10:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:00,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:00,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:10:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:00,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:10:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:10:00,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:00,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:00,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437695857] [2022-11-20 11:10:00,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:00,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544272727] [2022-11-20 11:10:00,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544272727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:00,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:00,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:10:00,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093961895] [2022-11-20 11:10:00,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:00,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:10:00,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:10:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:10:00,631 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:00,882 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-11-20 11:10:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:10:00,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-11-20 11:10:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:00,915 INFO L225 Difference]: With dead ends: 50 [2022-11-20 11:10:00,915 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:10:00,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:00,917 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:00,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:10:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:10:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-11-20 11:10:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:10:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-20 11:10:00,945 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2022-11-20 11:10:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:00,946 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-20 11:10:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-20 11:10:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:10:00,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:00,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:00,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:01,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:01,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2022-11-20 11:10:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:01,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931563445] [2022-11-20 11:10:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:01,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:01,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684615891] [2022-11-20 11:10:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:01,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:01,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:01,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:10:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:01,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:10:01,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:10:01,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:01,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931563445] [2022-11-20 11:10:01,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684615891] [2022-11-20 11:10:01,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684615891] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:01,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:01,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 11:10:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580962870] [2022-11-20 11:10:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:01,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:10:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:01,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:10:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:10:01,995 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:02,144 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-20 11:10:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:10:02,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-11-20 11:10:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:02,149 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:10:02,149 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:10:02,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:10:02,153 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:02,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:10:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:10:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-20 11:10:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:10:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-20 11:10:02,201 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2022-11-20 11:10:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:02,203 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-20 11:10:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-20 11:10:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 11:10:02,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:02,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:02,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:02,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:02,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2022-11-20 11:10:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089130469] [2022-11-20 11:10:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:02,436 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:02,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284053128] [2022-11-20 11:10:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:02,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:02,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:10:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:02,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:10:02,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:10:02,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:10:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:02,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089130469] [2022-11-20 11:10:02,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:02,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284053128] [2022-11-20 11:10:02,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284053128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:02,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:02,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-20 11:10:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206455416] [2022-11-20 11:10:02,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:10:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:10:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:10:02,761 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:03,136 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2022-11-20 11:10:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:10:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-20 11:10:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:03,143 INFO L225 Difference]: With dead ends: 99 [2022-11-20 11:10:03,146 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 11:10:03,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:10:03,153 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:03,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 209 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:10:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 11:10:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2022-11-20 11:10:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:10:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-11-20 11:10:03,184 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2022-11-20 11:10:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:03,186 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-11-20 11:10:03,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-11-20 11:10:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:10:03,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:03,189 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:03,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:10:03,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:03,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2022-11-20 11:10:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180677085] [2022-11-20 11:10:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:03,422 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:03,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473265950] [2022-11-20 11:10:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:03,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:03,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:03,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:10:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:03,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:10:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:10:04,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180677085] [2022-11-20 11:10:04,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473265950] [2022-11-20 11:10:04,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473265950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:04,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-20 11:10:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508788217] [2022-11-20 11:10:04,388 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:04,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:10:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:10:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:10:04,389 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:10:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:04,843 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2022-11-20 11:10:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:10:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2022-11-20 11:10:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:04,849 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:10:04,849 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 11:10:04,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:10:04,850 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:04,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 135 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 295 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2022-11-20 11:10:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 11:10:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2022-11-20 11:10:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:10:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-11-20 11:10:04,874 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2022-11-20 11:10:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:04,875 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-11-20 11:10:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:10:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-11-20 11:10:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:10:04,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:04,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:04,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:05,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2022-11-20 11:10:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:05,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842634398] [2022-11-20 11:10:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:05,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:05,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798116340] [2022-11-20 11:10:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:05,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:05,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:05,127 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:05,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:10:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:05,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:10:05,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:10:05,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:05,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:05,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842634398] [2022-11-20 11:10:05,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:05,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798116340] [2022-11-20 11:10:05,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798116340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:05,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:05,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-20 11:10:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071374280] [2022-11-20 11:10:05,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:05,718 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 11:10:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:06,078 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2022-11-20 11:10:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:10:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-11-20 11:10:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:06,081 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:10:06,081 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 11:10:06,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:10:06,082 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:06,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 261 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 71 Unchecked, 0.3s Time] [2022-11-20 11:10:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 11:10:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2022-11-20 11:10:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-20 11:10:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2022-11-20 11:10:06,111 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2022-11-20 11:10:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:06,112 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2022-11-20 11:10:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 11:10:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2022-11-20 11:10:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:10:06,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:06,114 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:06,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:06,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2022-11-20 11:10:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:06,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650161758] [2022-11-20 11:10:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:06,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:06,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884646216] [2022-11-20 11:10:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:06,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:06,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:06,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:06,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:10:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:06,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:10:06,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:10:07,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:10:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650161758] [2022-11-20 11:10:07,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884646216] [2022-11-20 11:10:07,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884646216] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:07,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:07,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2022-11-20 11:10:07,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510505905] [2022-11-20 11:10:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:07,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:10:07,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:10:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:10:07,292 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:10:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:07,409 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2022-11-20 11:10:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:10:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-11-20 11:10:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:07,411 INFO L225 Difference]: With dead ends: 147 [2022-11-20 11:10:07,412 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 11:10:07,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:10:07,413 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:07,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:10:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 11:10:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2022-11-20 11:10:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-20 11:10:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2022-11-20 11:10:07,460 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2022-11-20 11:10:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:07,460 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2022-11-20 11:10:07,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:10:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2022-11-20 11:10:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:10:07,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:07,462 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:07,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 11:10:07,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:10:07,669 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2022-11-20 11:10:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:07,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680097363] [2022-11-20 11:10:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:07,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:07,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656501179] [2022-11-20 11:10:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:07,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:07,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:07,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:07,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:10:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:07,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:10:07,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:08,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:08,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680097363] [2022-11-20 11:10:08,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:08,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656501179] [2022-11-20 11:10:08,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656501179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:08,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:08,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-11-20 11:10:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466489401] [2022-11-20 11:10:08,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:08,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:08,208 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2022-11-20 11:10:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:09,137 INFO L93 Difference]: Finished difference Result 243 states and 350 transitions. [2022-11-20 11:10:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:10:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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 43 [2022-11-20 11:10:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:09,146 INFO L225 Difference]: With dead ends: 243 [2022-11-20 11:10:09,146 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 11:10:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:10:09,149 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 75 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:09,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 299 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 76 Unchecked, 0.5s Time] [2022-11-20 11:10:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 11:10:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2022-11-20 11:10:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.272) internal successors, (159), 133 states have internal predecessors, (159), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (63), 56 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-20 11:10:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 286 transitions. [2022-11-20 11:10:09,263 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 286 transitions. Word has length 43 [2022-11-20 11:10:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:09,263 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 286 transitions. [2022-11-20 11:10:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2022-11-20 11:10:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 286 transitions. [2022-11-20 11:10:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:10:09,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:09,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:09,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:10:09,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2022-11-20 11:10:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:09,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216038645] [2022-11-20 11:10:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:09,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:09,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697301102] [2022-11-20 11:10:09,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:09,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:09,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:09,498 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:09,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:10:09,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:10:09,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:09,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:10:09,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:09,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:09,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216038645] [2022-11-20 11:10:09,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697301102] [2022-11-20 11:10:09,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697301102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:09,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:09,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:10:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604474024] [2022-11-20 11:10:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:10:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:10:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:10:09,647 INFO L87 Difference]: Start difference. First operand 198 states and 286 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:09,852 INFO L93 Difference]: Finished difference Result 254 states and 362 transitions. [2022-11-20 11:10:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:10:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-11-20 11:10:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:09,857 INFO L225 Difference]: With dead ends: 254 [2022-11-20 11:10:09,857 INFO L226 Difference]: Without dead ends: 158 [2022-11-20 11:10:09,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:10:09,866 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:09,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 139 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:10:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-20 11:10:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2022-11-20 11:10:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 88 states have internal predecessors, (100), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-20 11:10:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2022-11-20 11:10:09,931 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 43 [2022-11-20 11:10:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:09,932 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2022-11-20 11:10:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:10:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2022-11-20 11:10:09,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:10:09,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:09,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:09,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:10,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:10:10,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2022-11-20 11:10:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28023979] [2022-11-20 11:10:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:10,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:10,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742599313] [2022-11-20 11:10:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:10,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:10,177 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:10,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:10:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:10,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:10:10,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:10:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:10:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28023979] [2022-11-20 11:10:10,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742599313] [2022-11-20 11:10:10,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742599313] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:10,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:10,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-11-20 11:10:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984311938] [2022-11-20 11:10:10,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:10:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:10:10,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:10:10,689 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:10:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:10,809 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2022-11-20 11:10:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:10:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-20 11:10:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:10,811 INFO L225 Difference]: With dead ends: 139 [2022-11-20 11:10:10,811 INFO L226 Difference]: Without dead ends: 137 [2022-11-20 11:10:10,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:10:10,813 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:10,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:10:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-20 11:10:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-20 11:10:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.197674418604651) internal successors, (103), 91 states have internal predecessors, (103), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-20 11:10:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-11-20 11:10:10,876 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 48 [2022-11-20 11:10:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:10,876 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-11-20 11:10:10,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:10:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-11-20 11:10:10,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:10:10,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:10,880 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:10,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:11,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:10:11,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2022-11-20 11:10:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:11,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848745038] [2022-11-20 11:10:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:11,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:11,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138148969] [2022-11-20 11:10:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:11,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:11,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:11,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:11,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:10:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:11,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:10:11,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:10:12,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 11:10:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848745038] [2022-11-20 11:10:13,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:13,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138148969] [2022-11-20 11:10:13,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138148969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:13,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:13,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2022-11-20 11:10:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921305421] [2022-11-20 11:10:13,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:13,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:10:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:10:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:10:13,508 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 11:10:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:21,176 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2022-11-20 11:10:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:10:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2022-11-20 11:10:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:21,178 INFO L225 Difference]: With dead ends: 312 [2022-11-20 11:10:21,179 INFO L226 Difference]: Without dead ends: 190 [2022-11-20 11:10:21,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:10:21,181 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 218 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:21,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 192 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 11:10:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-20 11:10:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2022-11-20 11:10:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 113 states have internal predecessors, (128), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 11:10:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2022-11-20 11:10:21,297 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2022-11-20 11:10:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:21,298 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2022-11-20 11:10:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 11:10:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2022-11-20 11:10:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:10:21,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:21,300 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:21,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:21,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:21,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:21,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2022-11-20 11:10:21,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:21,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934664552] [2022-11-20 11:10:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:21,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:21,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264538954] [2022-11-20 11:10:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:21,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:21,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:21,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:10:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:21,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:10:21,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 11:10:21,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 11:10:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934664552] [2022-11-20 11:10:22,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264538954] [2022-11-20 11:10:22,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264538954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:22,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:22,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-20 11:10:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975308223] [2022-11-20 11:10:22,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:22,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:10:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:22,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:10:22,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:10:22,022 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 11:10:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:22,603 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2022-11-20 11:10:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:10:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 68 [2022-11-20 11:10:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:22,605 INFO L225 Difference]: With dead ends: 236 [2022-11-20 11:10:22,606 INFO L226 Difference]: Without dead ends: 156 [2022-11-20 11:10:22,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:10:22,607 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 92 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:22,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 216 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:10:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-20 11:10:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2022-11-20 11:10:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 94 states have (on average 1.148936170212766) internal successors, (108), 97 states have internal predecessors, (108), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 11:10:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-11-20 11:10:22,712 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 68 [2022-11-20 11:10:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:22,712 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-11-20 11:10:22,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 11:10:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-11-20 11:10:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:10:22,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:22,715 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:22,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 11:10:22,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:10:22,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2022-11-20 11:10:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:22,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760011524] [2022-11-20 11:10:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:22,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:22,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134887859] [2022-11-20 11:10:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:22,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:22,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:22,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:10:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:23,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-20 11:10:23,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 11:10:24,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-20 11:10:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760011524] [2022-11-20 11:10:36,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134887859] [2022-11-20 11:10:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134887859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:36,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:36,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2022-11-20 11:10:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296085575] [2022-11-20 11:10:36,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:10:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:10:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:10:36,115 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-20 11:10:45,812 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 [] [2022-11-20 11:11:01,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:09,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:28,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:38,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:46,576 INFO L93 Difference]: Finished difference Result 315 states and 442 transitions. [2022-11-20 11:11:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-20 11:11:46,577 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 87 [2022-11-20 11:11:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:46,579 INFO L225 Difference]: With dead ends: 315 [2022-11-20 11:11:46,579 INFO L226 Difference]: Without dead ends: 311 [2022-11-20 11:11:46,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2458 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=1422, Invalid=6768, Unknown=0, NotChecked=0, Total=8190 [2022-11-20 11:11:46,583 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 449 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 591 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:46,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 432 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2602 Invalid, 4 Unknown, 0 Unchecked, 32.2s Time] [2022-11-20 11:11:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-20 11:11:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 278. [2022-11-20 11:11:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 170 states have (on average 1.1823529411764706) internal successors, (201), 172 states have internal predecessors, (201), 90 states have call successors, (90), 17 states have call predecessors, (90), 17 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-20 11:11:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 380 transitions. [2022-11-20 11:11:46,836 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 380 transitions. Word has length 87 [2022-11-20 11:11:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:46,837 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 380 transitions. [2022-11-20 11:11:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-20 11:11:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 380 transitions. [2022-11-20 11:11:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 11:11:46,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:46,839 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:46,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:47,043 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -275231594, now seen corresponding path program 1 times [2022-11-20 11:11:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:47,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398294547] [2022-11-20 11:11:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:47,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738612568] [2022-11-20 11:11:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:47,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:47,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:47,067 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:47,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:11:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:47,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:11:47,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-20 11:11:47,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 11:11:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398294547] [2022-11-20 11:11:47,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738612568] [2022-11-20 11:11:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738612568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:47,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:47,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-20 11:11:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372526008] [2022-11-20 11:11:47,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:47,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:11:47,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:11:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:11:47,653 INFO L87 Difference]: Start difference. First operand 278 states and 380 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 11:11:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:48,673 INFO L93 Difference]: Finished difference Result 467 states and 650 transitions. [2022-11-20 11:11:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:11:48,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-11-20 11:11:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:48,676 INFO L225 Difference]: With dead ends: 467 [2022-11-20 11:11:48,676 INFO L226 Difference]: Without dead ends: 311 [2022-11-20 11:11:48,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:11:48,678 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:48,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 307 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:11:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-20 11:11:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2022-11-20 11:11:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 181 states have (on average 1.1767955801104972) internal successors, (213), 183 states have internal predecessors, (213), 106 states have call successors, (106), 17 states have call predecessors, (106), 17 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:11:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-11-20 11:11:49,037 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 90 [2022-11-20 11:11:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:49,038 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-11-20 11:11:49,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 11:11:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-11-20 11:11:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 11:11:49,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:49,039 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:49,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:49,240 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1599365144, now seen corresponding path program 1 times [2022-11-20 11:11:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:49,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362229158] [2022-11-20 11:11:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:49,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:49,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452611693] [2022-11-20 11:11:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:49,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:49,259 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:49,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:11:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:49,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:11:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-20 11:11:49,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 11:11:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362229158] [2022-11-20 11:11:50,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452611693] [2022-11-20 11:11:50,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452611693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:50,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:50,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-20 11:11:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729224924] [2022-11-20 11:11:50,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:50,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:11:50,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:11:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:11:50,170 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-20 11:11:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:51,959 INFO L93 Difference]: Finished difference Result 376 states and 518 transitions. [2022-11-20 11:11:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:11:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 90 [2022-11-20 11:11:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:51,962 INFO L225 Difference]: With dead ends: 376 [2022-11-20 11:11:51,962 INFO L226 Difference]: Without dead ends: 225 [2022-11-20 11:11:51,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:11:51,966 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 135 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:51,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 190 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:11:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-20 11:11:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-20 11:11:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 137 states have internal predecessors, (159), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-20 11:11:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 314 transitions. [2022-11-20 11:11:52,180 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 314 transitions. Word has length 90 [2022-11-20 11:11:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 314 transitions. [2022-11-20 11:11:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-20 11:11:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 314 transitions. [2022-11-20 11:11:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:11:52,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:52,183 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:52,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:52,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:11:52,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 453133023, now seen corresponding path program 2 times [2022-11-20 11:11:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633155351] [2022-11-20 11:11:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:52,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:52,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575066637] [2022-11-20 11:11:52,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:52,404 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:52,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:11:52,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:11:52,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:52,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:11:52,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 46 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 11:11:52,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 44 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 11:11:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:53,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633155351] [2022-11-20 11:11:53,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:53,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575066637] [2022-11-20 11:11:53,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575066637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:53,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:53,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-20 11:11:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114486772] [2022-11-20 11:11:53,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:53,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:11:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:11:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:11:53,160 INFO L87 Difference]: Start difference. First operand 225 states and 314 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:11:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:54,742 INFO L93 Difference]: Finished difference Result 376 states and 535 transitions. [2022-11-20 11:11:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:11:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 112 [2022-11-20 11:11:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:54,745 INFO L225 Difference]: With dead ends: 376 [2022-11-20 11:11:54,745 INFO L226 Difference]: Without dead ends: 288 [2022-11-20 11:11:54,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 11:11:54,747 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 132 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 340 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:11:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-20 11:11:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2022-11-20 11:11:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 167 states have internal predecessors, (194), 105 states have call successors, (105), 11 states have call predecessors, (105), 11 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-20 11:11:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 403 transitions. [2022-11-20 11:11:55,044 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 403 transitions. Word has length 112 [2022-11-20 11:11:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:55,044 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 403 transitions. [2022-11-20 11:11:55,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:11:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 403 transitions. [2022-11-20 11:11:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 11:11:55,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:55,047 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:55,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:11:55,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 387872868, now seen corresponding path program 3 times [2022-11-20 11:11:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678890183] [2022-11-20 11:11:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:55,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:55,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83689173] [2022-11-20 11:11:55,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:11:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:55,274 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:55,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:11:55,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:11:55,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:55,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 11:11:55,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 47 proven. 30 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-20 11:11:56,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-20 11:11:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:56,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678890183] [2022-11-20 11:11:56,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:56,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83689173] [2022-11-20 11:11:56,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83689173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:56,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:56,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2022-11-20 11:11:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839145725] [2022-11-20 11:11:56,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:56,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:11:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:11:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:11:56,872 INFO L87 Difference]: Start difference. First operand 283 states and 403 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 11:12:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:06,195 INFO L93 Difference]: Finished difference Result 378 states and 529 transitions. [2022-11-20 11:12:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:12:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 115 [2022-11-20 11:12:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:06,198 INFO L225 Difference]: With dead ends: 378 [2022-11-20 11:12:06,198 INFO L226 Difference]: Without dead ends: 376 [2022-11-20 11:12:06,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:12:06,200 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 190 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:06,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 376 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 11:12:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-20 11:12:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 368. [2022-11-20 11:12:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 218 states have (on average 1.165137614678899) internal successors, (254), 219 states have internal predecessors, (254), 133 states have call successors, (133), 16 states have call predecessors, (133), 16 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-20 11:12:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 519 transitions. [2022-11-20 11:12:06,571 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 519 transitions. Word has length 115 [2022-11-20 11:12:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:06,571 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 519 transitions. [2022-11-20 11:12:06,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 11:12:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 519 transitions. [2022-11-20 11:12:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:12:06,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:06,574 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:06,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:06,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:12:06,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash 965525295, now seen corresponding path program 4 times [2022-11-20 11:12:06,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:06,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753775974] [2022-11-20 11:12:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:06,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819252358] [2022-11-20 11:12:06,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:12:06,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:06,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:06,812 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:06,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:12:06,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:12:06,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:06,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:12:06,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 139 proven. 28 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-20 11:12:07,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-20 11:12:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:07,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753775974] [2022-11-20 11:12:07,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:07,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819252358] [2022-11-20 11:12:07,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819252358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:07,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:07,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2022-11-20 11:12:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474090317] [2022-11-20 11:12:07,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:07,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:12:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:12:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:12:07,641 INFO L87 Difference]: Start difference. First operand 368 states and 519 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-20 11:12:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:08,481 INFO L93 Difference]: Finished difference Result 449 states and 618 transitions. [2022-11-20 11:12:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:12:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 117 [2022-11-20 11:12:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:08,483 INFO L225 Difference]: With dead ends: 449 [2022-11-20 11:12:08,483 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 11:12:08,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:12:08,485 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 80 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:08,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 243 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:12:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 11:12:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-20 11:12:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 states have internal predecessors, (104), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-20 11:12:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 177 transitions. [2022-11-20 11:12:08,592 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 177 transitions. Word has length 117 [2022-11-20 11:12:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:08,592 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 177 transitions. [2022-11-20 11:12:08,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-20 11:12:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 177 transitions. [2022-11-20 11:12:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 11:12:08,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:08,595 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:08,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:08,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:12:08,802 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash -451913227, now seen corresponding path program 5 times [2022-11-20 11:12:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:08,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733327910] [2022-11-20 11:12:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:08,817 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:08,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811444553] [2022-11-20 11:12:08,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:12:08,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:08,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:08,819 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:12:08,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 11:12:08,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:08,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:12:08,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 63 proven. 68 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 11:12:09,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 61 proven. 70 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 11:12:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:09,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733327910] [2022-11-20 11:12:09,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:09,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811444553] [2022-11-20 11:12:09,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811444553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:09,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:09,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-20 11:12:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693871850] [2022-11-20 11:12:09,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:12:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:12:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:12:09,904 INFO L87 Difference]: Start difference. First operand 154 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 11:12:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:11,328 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2022-11-20 11:12:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:12:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) Word has length 142 [2022-11-20 11:12:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:11,329 INFO L225 Difference]: With dead ends: 162 [2022-11-20 11:12:11,329 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:12:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:12:11,331 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 381 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:12:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:12:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:12:11,335 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) [2022-11-20 11:12:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:12:11,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2022-11-20 11:12:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:11,336 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:12:11,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 11:12:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:12:11,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:12:11,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:12:11,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:11,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:11,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:12:23,031 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:12:31,644 WARN L233 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 235 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:12:39,092 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:12:49,474 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 235 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:12:56,058 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 215 DAG size of output: 88 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:13:05,781 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:13:05,795 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse14 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse4 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse5 (<= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) .cse3 .cse4 .cse5 (<= (* 3 |ULTIMATE.start_main_~b~0#1|) 0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= (* 3 |ULTIMATE.start_main_~c~0#1|) 0) .cse6 .cse7 .cse8 .cse9) (and .cse3 .cse4 .cse5 (< |ULTIMATE.start_main_~c~0#1| (+ (* (div (+ |ULTIMATE.start_main_~c~0#1| (- |ULTIMATE.start_main_~b~0#1|)) 2) 2) 2)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~s~0#1| 0) .cse6 (<= |ULTIMATE.start_main_~c~0#1| 2) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8) (and (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse11 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse12 .cse8 .cse9 .cse13) (and (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse3 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse7 (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) (< |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~y~0#1|)) .cse8 .cse9 (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0)) (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) 2) .cse11 (< (* 2 |ULTIMATE.start_main_~c~0#1|) .cse14) (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) (< (* 2 |ULTIMATE.start_main_~b~0#1|) (+ |ULTIMATE.start_main_~c~0#1| 1)) .cse12 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse8 .cse13)))) [2022-11-20 11:13:05,796 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2))) [2022-11-20 11:13:05,796 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#1|) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-20 11:13:05,797 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-11-20 11:13:05,797 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:13:05,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:13:05,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:13:05,797 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:13:05,798 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:13:05,798 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-11-20 11:13:05,798 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse14 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse15 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (<= .cse15 |ULTIMATE.start_main_~c~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse10 (= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 (= .cse14 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse8 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse9 .cse10 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse16 (* |ULTIMATE.start_main_~b~0#1| 4))) (and .cse11 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse15 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse6 .cse7 (<= |ULTIMATE.start_main_~v~0#1| .cse16) .cse10 .cse13 (<= .cse16 |ULTIMATE.start_main_~c~0#1|)))))) [2022-11-20 11:13:05,799 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-11-20 11:13:05,799 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-11-20 11:13:05,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:13:05,799 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:13:05,800 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse14 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse15 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (<= .cse15 |ULTIMATE.start_main_~c~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse10 (= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 (= .cse14 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse8 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse9 .cse10 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse16 (* |ULTIMATE.start_main_~b~0#1| 4))) (and .cse11 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse15 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse6 .cse7 (<= |ULTIMATE.start_main_~v~0#1| .cse16) .cse10 .cse13 (<= .cse16 |ULTIMATE.start_main_~c~0#1|)))))) [2022-11-20 11:13:05,800 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#1|) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-20 11:13:05,800 INFO L902 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2022-11-20 11:13:05,801 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse17 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse22 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (+ .cse22 .cse23)) (.cse12 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse20 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse21 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (+ .cse17 |ULTIMATE.start_main_~c~0#1|))) (let ((.cse13 (<= .cse16 2)) (.cse11 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse6 (= (+ .cse20 .cse21) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= .cse12 |ULTIMATE.start_main_~c~0#1|)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse4 (= .cse0 |ULTIMATE.start_main_~a~0#1|))) (or (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~s~0#1| Int)) (= .cse0 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse1 (<= (+ |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) 2) .cse2 (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse4 .cse5) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse6 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse7 .cse8 .cse9 .cse3 .cse4 .cse10 .cse5) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse11 (<= .cse12 |ULTIMATE.start_main_~a~0#1|) .cse6 .cse13 .cse14 .cse9 .cse15 (= .cse16 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse17 |ULTIMATE.start_main_~v~0#1|) .cse4 (= 2 |ULTIMATE.start_main_~k~0#1|)) (and (= (+ .cse18 .cse19 .cse20 .cse21) (+ .cse22 |ULTIMATE.start_main_~b~0#1| .cse23)) (<= |ULTIMATE.start_main_~v~0#1| .cse17) .cse11 .cse6 .cse13 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse7 (<= (+ |ULTIMATE.start_main_~c~0#1| 1) .cse17) .cse9 .cse3 .cse4 .cse10 .cse5) (and (= |ULTIMATE.start_main_~k~0#1| 1) (< |ULTIMATE.start_main_~x~0#1| .cse17) .cse11 .cse6 .cse2 .cse7 .cse3 .cse4 .cse10 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= .cse0 (+ .cse18 .cse19 |ULTIMATE.start_main_~c~0#1|)) .cse8 .cse14 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4))))) [2022-11-20 11:13:05,802 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-11-20 11:13:05,802 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-20 11:13:05,802 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-20 11:13:05,802 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 11:13:05,803 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#1|) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-20 11:13:05,803 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-11-20 11:13:05,803 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-20 11:13:05,803 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-20 11:13:05,804 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-20 11:13:05,804 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-20 11:13:05,804 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-20 11:13:05,804 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-20 11:13:05,804 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-20 11:13:05,805 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-20 11:13:05,805 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-20 11:13:05,805 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-20 11:13:05,809 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:05,812 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:13:05,825 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-20 11:13:05,826 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-20 11:13:05,835 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-20 11:13:05,835 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-20 11:13:05,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:13:05 BoogieIcfgContainer [2022-11-20 11:13:05,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:13:05,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:13:05,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:13:05,850 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:13:05,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:59" (3/4) ... [2022-11-20 11:13:05,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:13:05,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:13:05,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:13:05,868 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:13:05,868 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:13:05,869 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:13:05,869 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:13:05,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:13:05,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:13:05,920 INFO L158 Benchmark]: Toolchain (without parser) took 187481.49ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 151.0MB in the beginning and 120.4MB in the end (delta: 30.6MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,921 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:05,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.13ms. Allocated memory is still 192.9MB. Free memory was 151.0MB in the beginning and 140.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.37ms. Allocated memory is still 192.9MB. Free memory was 140.5MB in the beginning and 139.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:05,922 INFO L158 Benchmark]: Boogie Preprocessor took 44.62ms. Allocated memory is still 192.9MB. Free memory was 139.2MB in the beginning and 137.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,922 INFO L158 Benchmark]: RCFGBuilder took 398.41ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 125.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,923 INFO L158 Benchmark]: TraceAbstraction took 186545.36ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.4MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,923 INFO L158 Benchmark]: Witness Printer took 70.59ms. Allocated memory is still 281.0MB. Free memory was 123.5MB in the beginning and 120.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:13:05,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.13ms. Allocated memory is still 192.9MB. Free memory was 151.0MB in the beginning and 140.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.37ms. Allocated memory is still 192.9MB. Free memory was 140.5MB in the beginning and 139.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.62ms. Allocated memory is still 192.9MB. Free memory was 139.2MB in the beginning and 137.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 398.41ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 125.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 186545.36ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.4MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. * Witness Printer took 70.59ms. Allocated memory is still 281.0MB. Free memory was 123.5MB in the beginning and 120.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] * 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 186.4s, OverallIterations: 19, TraceHistogramMax: 17, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 98.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 54.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1842 SdHoareTripleChecker+Valid, 48.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1792 mSDsluCounter, 4270 SdHoareTripleChecker+Invalid, 46.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 188 IncrementalHoareTripleChecker+Unchecked, 3434 mSDsCounter, 1800 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8165 IncrementalHoareTripleChecker+Invalid, 10157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1800 mSolverCounterUnsat, 836 mSDtfsCounter, 8165 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2563 GetRequests, 2068 SyntacticMatches, 13 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4475 ImplicationChecksByTransitivity, 57.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=17, InterpolantAutomatonStates: 312, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 199 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 389 PreInvPairs, 463 NumberOfFragments, 1957 HoareAnnotationTreeSize, 389 FomulaSimplifications, 8758 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 15 FomulaSimplificationsInter, 27584 FormulaSimplificationTreeSizeReductionInter, 52.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 1290 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2348 ConstructedInterpolants, 16 QuantifiedInterpolants, 11421 SizeOfPredicates, 138 NumberOfNonLiveVariables, 3182 ConjunctsInSsa, 456 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 5032/5581 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant [2022-11-20 11:13:05,935 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-20 11:13:05,936 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-20 11:13:05,937 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-20 11:13:05,938 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] Derived loop invariant: (((((((((((((x + 1 <= y && (forall ULTIMATE.start_main_~q~0#1 : int, ULTIMATE.start_main_~s~0#1 : int :: r * y + p * x == k * ULTIMATE.start_main_~q~0#1 * x + k * ULTIMATE.start_main_~s~0#1 * y + c)) && b + 1 <= c) && b + 2 * a <= 2) && r == 0) && 2 + q == 0) && a == x) && y == 2 * x + b) && r * y + p * x == a) && s == 1) || (((((((((((c == x && 1 <= y) && s * y + q * x == b) && b <= 2) && r == 0) && q == 0) && k == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || ((((((((((((a == y && b * d == v) && b + 1 <= a) && s * y + q * x == b) && 2 * b + c <= 2) && s == 0) && 1 <= x) && r == 1) && 2 * b + c == y) && c < b) && 2 * b == v) && r * y + p * x == a) && 2 == k)) || (((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && v <= 2 * b) && b * d == v) && s * y + q * x == b) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && c + 1 <= 2 * b) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((((k == 1 && x < 2 * b) && b * d == v) && s * y + q * x == b) && r == 0) && q == 0) && a == x) && r * y + p * x == a) && x <= 2) && b <= x) && s == 1) && b + c == x)) || ((((((((((b == x && b + 1 <= c) && q == 1) && r * y + p * x == k * q * x + k * s * y + c) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && c == y) && r * y + p * x == a) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((a == y && b * d == v) && s * y + q * x == b) && b + 1 <= c) && b == v) && q == 1) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && c == y) && r * y + p * x == a) || ((((((((((((a == c + b * k && 1 <= y) && b * d == v) && b == y) && b <= a) && v <= c) && r == 0) && q == 0) && k == 0) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || ((((((((((((b == x && b + 1 <= c) && q == 1) && r * y + p * x == k * q * x + k * s * y + c) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && 2 * b == v) && c == y) && r * y + p * x == a) && 2 == d)) || (((((((((((((a == c + b * k && y <= 2) && 1 <= y) && a <= 2) && b * d == v) && b + 1 <= a) && s * y + q * x == b) && b + 1 <= c) && 1 <= x) && c <= 2) && v <= b * 4) && r * y + p * x == a) && x <= 2) && b * 4 <= c) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((0 <= b && r * y + p * x == a + s * y + q * x) && a == y) && a <= 2) && b + 1 <= a) && 3 * b <= 0) && 0 <= c) && 3 * c <= 0) && 1 <= x) && r == 1) && r * y + p * x == a) && x <= 2) || (((((((((((a == y && a <= 2) && b + 1 <= a) && c < (c + -b) / 2 * 2 + 2) && b == x) && q == 1) && s == 0) && 1 <= x) && c <= 2) && b <= c) && r == 1) && r * y + p * x == a)) || (((((((((s * y + q * x == b && b <= 2) && 1 <= b) && r == 0) && q == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((b + y == x && a == y) && y <= x) && q == 1) && r == 1) && (2 * v <= c || !(c == v))) && x < 2 * y) && r * y + p * x == a) && x <= 2) && s + 1 == 0)) || (((((((((x + 1 <= y && b + 2 * a <= 2) && r == 0) && 2 * c < b + 1) && 2 + q == 0) && 2 * b < c + 1) && a == x) && y == 2 * x + b) && r * y + p * x == a) && s == 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 11:13:06,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184714f-a8ce-48ec-9ee5-5175db125b47/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE