./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa --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 bc8487f898950b83c481f83a71342af68752fb6e7598d76df123761c32c89f72 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:15:03,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:15:03,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:15:03,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:15:03,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:15:04,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:15:04,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:15:04,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:15:04,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:15:04,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:15:04,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:15:04,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:15:04,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:15:04,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:15:04,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:15:04,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:15:04,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:15:04,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:15:04,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:15:04,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:15:04,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:15:04,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:15:04,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:15:04,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:15:04,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:15:04,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:15:04,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:15:04,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:15:04,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:15:04,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:15:04,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:15:04,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:15:04,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:15:04,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:15:04,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:15:04,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:15:04,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:15:04,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:15:04,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:15:04,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:15:04,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:15:04,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:15:04,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:15:04,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:15:04,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:15:04,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:15:04,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:15:04,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:15:04,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:15:04,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:15:04,060 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:15:04,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:15:04,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:15:04,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:15:04,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:15:04,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:15:04,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:15:04,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:15:04,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:15:04,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:15:04,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:15:04,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:15:04,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:15:04,063 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_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc8487f898950b83c481f83a71342af68752fb6e7598d76df123761c32c89f72 [2021-12-06 19:15:04,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:15:04,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:15:04,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:15:04,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:15:04,253 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:15:04,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2021-12-06 19:15:04,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/data/e124c124e/5af77756d3c145938911de7b8685dedc/FLAGd9bb1e61e [2021-12-06 19:15:04,685 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:15:04,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2021-12-06 19:15:04,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/data/e124c124e/5af77756d3c145938911de7b8685dedc/FLAGd9bb1e61e [2021-12-06 19:15:04,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/data/e124c124e/5af77756d3c145938911de7b8685dedc [2021-12-06 19:15:04,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:15:04,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:15:04,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:15:04,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:15:04,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:15:04,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:04,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be959a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04, skipping insertion in model container [2021-12-06 19:15:04,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:04,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:15:04,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:15:04,866 WARN L230 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_7f3b1805-6708-4052-bd46-a171e7c19925/sv-benchmarks/c/systemc/token_ring.02.cil-2.c[671,684] [2021-12-06 19:15:04,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:15:04,920 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:15:04,931 WARN L230 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_7f3b1805-6708-4052-bd46-a171e7c19925/sv-benchmarks/c/systemc/token_ring.02.cil-2.c[671,684] [2021-12-06 19:15:04,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:15:04,965 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:15:04,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04 WrapperNode [2021-12-06 19:15:04,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:15:04,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:15:04,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:15:04,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:15:04,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:04,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:04,999 INFO L137 Inliner]: procedures = 32, calls = 38, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 278 [2021-12-06 19:15:04,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:15:05,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:15:05,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:15:05,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:15:05,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:15:05,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:15:05,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:15:05,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:15:05,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (1/1) ... [2021-12-06 19:15:05,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:15:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:05,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:15:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:15:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:15:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-06 19:15:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-06 19:15:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 19:15:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 19:15:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 19:15:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 19:15:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 19:15:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 19:15:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 19:15:05,083 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 19:15:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 19:15:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 19:15:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:15:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 19:15:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 19:15:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:15:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:15:05,136 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:15:05,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:15:05,415 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:15:05,424 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:15:05,424 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 19:15:05,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:15:05 BoogieIcfgContainer [2021-12-06 19:15:05,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:15:05,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:15:05,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:15:05,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:15:05,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:15:04" (1/3) ... [2021-12-06 19:15:05,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc5f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:15:05, skipping insertion in model container [2021-12-06 19:15:05,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:15:04" (2/3) ... [2021-12-06 19:15:05,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc5f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:15:05, skipping insertion in model container [2021-12-06 19:15:05,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:15:05" (3/3) ... [2021-12-06 19:15:05,433 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2021-12-06 19:15:05,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:15:05,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:15:05,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:15:05,481 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:15:05,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:15:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 113 states have (on average 1.584070796460177) internal successors, (179), 117 states have internal predecessors, (179), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 19:15:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:05,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:05,509 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:05,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1053890287, now seen corresponding path program 1 times [2021-12-06 19:15:05,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:05,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813155875] [2021-12-06 19:15:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:05,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:05,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:05,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813155875] [2021-12-06 19:15:05,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813155875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:05,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:15:05,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93123326] [2021-12-06 19:15:05,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:05,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:05,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:15:05,747 INFO L87 Difference]: Start difference. First operand has 140 states, 113 states have (on average 1.584070796460177) internal successors, (179), 117 states have internal predecessors, (179), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:06,048 INFO L93 Difference]: Finished difference Result 304 states and 476 transitions. [2021-12-06 19:15:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:06,058 INFO L225 Difference]: With dead ends: 304 [2021-12-06 19:15:06,058 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 19:15:06,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:06,064 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 298 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:06,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 377 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:15:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 19:15:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2021-12-06 19:15:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 109 states have (on average 1.4862385321100917) internal successors, (162), 111 states have internal predecessors, (162), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 19:15:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 196 transitions. [2021-12-06 19:15:06,108 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 196 transitions. Word has length 68 [2021-12-06 19:15:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:06,108 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 196 transitions. [2021-12-06 19:15:06,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 196 transitions. [2021-12-06 19:15:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:06,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:06,111 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:06,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:15:06,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1279502351, now seen corresponding path program 1 times [2021-12-06 19:15:06,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:06,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895844244] [2021-12-06 19:15:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:06,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:06,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:06,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895844244] [2021-12-06 19:15:06,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895844244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:06,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:06,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:15:06,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040029101] [2021-12-06 19:15:06,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:06,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:15:06,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:06,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:15:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:15:06,207 INFO L87 Difference]: Start difference. First operand 134 states and 196 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:06,657 INFO L93 Difference]: Finished difference Result 444 states and 667 transitions. [2021-12-06 19:15:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:15:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:06,662 INFO L225 Difference]: With dead ends: 444 [2021-12-06 19:15:06,662 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 19:15:06,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:15:06,666 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 419 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:06,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 604 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:15:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 19:15:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 255. [2021-12-06 19:15:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 212 states have (on average 1.5) internal successors, (318), 215 states have internal predecessors, (318), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-12-06 19:15:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 377 transitions. [2021-12-06 19:15:06,700 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 377 transitions. Word has length 68 [2021-12-06 19:15:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:06,700 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 377 transitions. [2021-12-06 19:15:06,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 377 transitions. [2021-12-06 19:15:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:06,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:06,702 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:06,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:15:06,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1382216715, now seen corresponding path program 1 times [2021-12-06 19:15:06,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:06,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233743559] [2021-12-06 19:15:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:06,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:06,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233743559] [2021-12-06 19:15:06,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233743559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:06,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:06,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:15:06,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470712749] [2021-12-06 19:15:06,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:06,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:15:06,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:15:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:06,786 INFO L87 Difference]: Start difference. First operand 255 states and 377 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:07,310 INFO L93 Difference]: Finished difference Result 717 states and 1071 transitions. [2021-12-06 19:15:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:15:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:07,315 INFO L225 Difference]: With dead ends: 717 [2021-12-06 19:15:07,315 INFO L226 Difference]: Without dead ends: 472 [2021-12-06 19:15:07,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:15:07,319 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 407 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:07,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1023 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-06 19:15:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 369. [2021-12-06 19:15:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 308 states have (on average 1.4935064935064934) internal successors, (460), 312 states have internal predecessors, (460), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2021-12-06 19:15:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 543 transitions. [2021-12-06 19:15:07,359 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 543 transitions. Word has length 68 [2021-12-06 19:15:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:07,359 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 543 transitions. [2021-12-06 19:15:07,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 543 transitions. [2021-12-06 19:15:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:07,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:07,362 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:07,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:15:07,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1525965171, now seen corresponding path program 1 times [2021-12-06 19:15:07,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075127136] [2021-12-06 19:15:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:07,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:07,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:07,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075127136] [2021-12-06 19:15:07,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075127136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:07,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:07,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:15:07,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088851045] [2021-12-06 19:15:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:07,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:15:07,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:15:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:07,445 INFO L87 Difference]: Start difference. First operand 369 states and 543 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:07,972 INFO L93 Difference]: Finished difference Result 1118 states and 1665 transitions. [2021-12-06 19:15:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:15:07,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:07,979 INFO L225 Difference]: With dead ends: 1118 [2021-12-06 19:15:07,979 INFO L226 Difference]: Without dead ends: 759 [2021-12-06 19:15:07,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:15:07,983 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 441 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:07,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 713 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-12-06 19:15:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 598. [2021-12-06 19:15:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 501 states have (on average 1.4870259481037924) internal successors, (745), 507 states have internal predecessors, (745), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2021-12-06 19:15:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 880 transitions. [2021-12-06 19:15:08,025 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 880 transitions. Word has length 68 [2021-12-06 19:15:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:08,025 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 880 transitions. [2021-12-06 19:15:08,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 880 transitions. [2021-12-06 19:15:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:08,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:08,027 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:08,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:15:08,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash -649946165, now seen corresponding path program 1 times [2021-12-06 19:15:08,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:08,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199901011] [2021-12-06 19:15:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:08,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:08,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:08,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199901011] [2021-12-06 19:15:08,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199901011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:08,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:08,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:15:08,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946279237] [2021-12-06 19:15:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:08,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:15:08,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:15:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:08,098 INFO L87 Difference]: Start difference. First operand 598 states and 880 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:08,675 INFO L93 Difference]: Finished difference Result 1992 states and 2956 transitions. [2021-12-06 19:15:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:15:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:08,685 INFO L225 Difference]: With dead ends: 1992 [2021-12-06 19:15:08,686 INFO L226 Difference]: Without dead ends: 1404 [2021-12-06 19:15:08,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:15:08,689 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 413 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:08,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1017 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-12-06 19:15:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1010. [2021-12-06 19:15:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 845 states have (on average 1.4733727810650887) internal successors, (1245), 855 states have internal predecessors, (1245), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2021-12-06 19:15:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1482 transitions. [2021-12-06 19:15:08,763 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1482 transitions. Word has length 68 [2021-12-06 19:15:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:08,763 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1482 transitions. [2021-12-06 19:15:08,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1482 transitions. [2021-12-06 19:15:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:08,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:08,766 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:08,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:15:08,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash 888393865, now seen corresponding path program 1 times [2021-12-06 19:15:08,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:08,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424175195] [2021-12-06 19:15:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:08,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:08,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424175195] [2021-12-06 19:15:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424175195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:08,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:08,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:15:08,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831690647] [2021-12-06 19:15:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:08,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:15:08,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:15:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:08,839 INFO L87 Difference]: Start difference. First operand 1010 states and 1482 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:09,438 INFO L93 Difference]: Finished difference Result 3390 states and 4996 transitions. [2021-12-06 19:15:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:15:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:09,450 INFO L225 Difference]: With dead ends: 3390 [2021-12-06 19:15:09,450 INFO L226 Difference]: Without dead ends: 2390 [2021-12-06 19:15:09,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:15:09,453 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 418 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:09,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 989 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-12-06 19:15:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1867. [2021-12-06 19:15:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1570 states have (on average 1.4745222929936306) internal successors, (2315), 1588 states have internal predecessors, (2315), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2021-12-06 19:15:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2766 transitions. [2021-12-06 19:15:09,550 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2766 transitions. Word has length 68 [2021-12-06 19:15:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:09,550 INFO L470 AbstractCegarLoop]: Abstraction has 1867 states and 2766 transitions. [2021-12-06 19:15:09,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2766 transitions. [2021-12-06 19:15:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:15:09,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:09,553 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:09,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:15:09,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1140192245, now seen corresponding path program 1 times [2021-12-06 19:15:09,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:09,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408309586] [2021-12-06 19:15:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:09,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:09,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408309586] [2021-12-06 19:15:09,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408309586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:09,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:09,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:15:09,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216182838] [2021-12-06 19:15:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:09,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:15:09,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:15:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:15:09,628 INFO L87 Difference]: Start difference. First operand 1867 states and 2766 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:10,159 INFO L93 Difference]: Finished difference Result 5251 states and 7801 transitions. [2021-12-06 19:15:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:15:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-06 19:15:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:10,175 INFO L225 Difference]: With dead ends: 5251 [2021-12-06 19:15:10,176 INFO L226 Difference]: Without dead ends: 3395 [2021-12-06 19:15:10,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:15:10,182 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 541 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:10,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 761 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2021-12-06 19:15:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 2808. [2021-12-06 19:15:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2353 states have (on average 1.4526136846578837) internal successors, (3418), 2388 states have internal predecessors, (3418), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2021-12-06 19:15:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4089 transitions. [2021-12-06 19:15:10,307 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4089 transitions. Word has length 68 [2021-12-06 19:15:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:10,307 INFO L470 AbstractCegarLoop]: Abstraction has 2808 states and 4089 transitions. [2021-12-06 19:15:10,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4089 transitions. [2021-12-06 19:15:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 19:15:10,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:10,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-12-06 19:15:10,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:15:10,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1415706776, now seen corresponding path program 1 times [2021-12-06 19:15:10,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:10,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657204712] [2021-12-06 19:15:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:10,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:15:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:15:10,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657204712] [2021-12-06 19:15:10,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657204712] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076993107] [2021-12-06 19:15:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:10,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:10,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:10,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:10,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:15:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:10,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 19:15:10,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:10,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076993107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:10,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:10,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 19:15:10,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481759183] [2021-12-06 19:15:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:10,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:10,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:10,624 INFO L87 Difference]: Start difference. First operand 2808 states and 4089 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:15:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:10,813 INFO L93 Difference]: Finished difference Result 8259 states and 12107 transitions. [2021-12-06 19:15:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2021-12-06 19:15:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:10,838 INFO L225 Difference]: With dead ends: 8259 [2021-12-06 19:15:10,839 INFO L226 Difference]: Without dead ends: 5462 [2021-12-06 19:15:10,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:10,846 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 152 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:10,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 374 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2021-12-06 19:15:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 5406. [2021-12-06 19:15:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 4537 states have (on average 1.451840423187128) internal successors, (6587), 4605 states have internal predecessors, (6587), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2021-12-06 19:15:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 7844 transitions. [2021-12-06 19:15:11,046 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 7844 transitions. Word has length 110 [2021-12-06 19:15:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:11,046 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 7844 transitions. [2021-12-06 19:15:11,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:15:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 7844 transitions. [2021-12-06 19:15:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 19:15:11,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:11,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-12-06 19:15:11,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:15:11,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:11,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1986703688, now seen corresponding path program 1 times [2021-12-06 19:15:11,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:11,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828930546] [2021-12-06 19:15:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:11,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:15:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:15:11,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828930546] [2021-12-06 19:15:11,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828930546] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426028211] [2021-12-06 19:15:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:11,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:11,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:11,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:11,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:15:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:11,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:11,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:15:11,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:11,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426028211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:11,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:11,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:11,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003317690] [2021-12-06 19:15:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:11,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:11,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:11,503 INFO L87 Difference]: Start difference. First operand 5406 states and 7844 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:11,723 INFO L93 Difference]: Finished difference Result 9176 states and 13438 transitions. [2021-12-06 19:15:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2021-12-06 19:15:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:11,765 INFO L225 Difference]: With dead ends: 9176 [2021-12-06 19:15:11,765 INFO L226 Difference]: Without dead ends: 7157 [2021-12-06 19:15:11,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:11,770 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 143 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:11,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 535 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-12-06 19:15:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2021-12-06 19:15:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 6007 states have (on average 1.4486432495422008) internal successors, (8702), 6091 states have internal predecessors, (8702), 673 states have call successors, (673), 413 states have call predecessors, (673), 476 states have return successors, (1015), 668 states have call predecessors, (1015), 671 states have call successors, (1015) [2021-12-06 19:15:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 10390 transitions. [2021-12-06 19:15:12,027 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 10390 transitions. Word has length 110 [2021-12-06 19:15:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:12,027 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 10390 transitions. [2021-12-06 19:15:12,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 10390 transitions. [2021-12-06 19:15:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 19:15:12,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:12,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:12,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:15:12,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 19:15:12,242 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1976353697, now seen corresponding path program 1 times [2021-12-06 19:15:12,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:12,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846321738] [2021-12-06 19:15:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:12,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 19:15:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:15:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 19:15:12,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846321738] [2021-12-06 19:15:12,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846321738] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677217348] [2021-12-06 19:15:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:12,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:12,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:12,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:15:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:12,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:12,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:15:12,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:12,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677217348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:12,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:12,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 19:15:12,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436701001] [2021-12-06 19:15:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:12,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:12,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:12,564 INFO L87 Difference]: Start difference. First operand 7157 states and 10390 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:15:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:12,934 INFO L93 Difference]: Finished difference Result 21167 states and 30956 transitions. [2021-12-06 19:15:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:12,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2021-12-06 19:15:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:12,998 INFO L225 Difference]: With dead ends: 21167 [2021-12-06 19:15:12,999 INFO L226 Difference]: Without dead ends: 14021 [2021-12-06 19:15:13,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:13,015 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:13,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 395 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14021 states. [2021-12-06 19:15:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14021 to 13877. [2021-12-06 19:15:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13877 states, 11640 states have (on average 1.4448453608247422) internal successors, (16818), 11806 states have internal predecessors, (16818), 1293 states have call successors, (1293), 816 states have call predecessors, (1293), 943 states have return successors, (1949), 1270 states have call predecessors, (1949), 1291 states have call successors, (1949) [2021-12-06 19:15:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13877 states to 13877 states and 20060 transitions. [2021-12-06 19:15:13,604 INFO L78 Accepts]: Start accepts. Automaton has 13877 states and 20060 transitions. Word has length 142 [2021-12-06 19:15:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:13,605 INFO L470 AbstractCegarLoop]: Abstraction has 13877 states and 20060 transitions. [2021-12-06 19:15:13,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:15:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 13877 states and 20060 transitions. [2021-12-06 19:15:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 19:15:13,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:13,637 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1] [2021-12-06 19:15:13,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:15:13,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:15:13,837 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1687241086, now seen corresponding path program 1 times [2021-12-06 19:15:13,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:13,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438585228] [2021-12-06 19:15:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:13,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:15:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:15:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:15:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:15:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:15:13,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438585228] [2021-12-06 19:15:13,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438585228] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533195409] [2021-12-06 19:15:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:13,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:13,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:13,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:15:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:13,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:14,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:15:14,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:14,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533195409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:14,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:14,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:14,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338462326] [2021-12-06 19:15:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:14,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:14,172 INFO L87 Difference]: Start difference. First operand 13877 states and 20060 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:14,712 INFO L93 Difference]: Finished difference Result 29372 states and 43088 transitions. [2021-12-06 19:15:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:14,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2021-12-06 19:15:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:14,757 INFO L225 Difference]: With dead ends: 29372 [2021-12-06 19:15:14,757 INFO L226 Difference]: Without dead ends: 15505 [2021-12-06 19:15:14,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:14,792 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 128 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:14,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 224 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15505 states. [2021-12-06 19:15:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15505 to 15505. [2021-12-06 19:15:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15505 states, 13108 states have (on average 1.3864815379920659) internal successors, (18174), 13274 states have internal predecessors, (18174), 1338 states have call successors, (1338), 931 states have call predecessors, (1338), 1058 states have return successors, (1999), 1315 states have call predecessors, (1999), 1336 states have call successors, (1999) [2021-12-06 19:15:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15505 states to 15505 states and 21511 transitions. [2021-12-06 19:15:15,347 INFO L78 Accepts]: Start accepts. Automaton has 15505 states and 21511 transitions. Word has length 159 [2021-12-06 19:15:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:15,347 INFO L470 AbstractCegarLoop]: Abstraction has 15505 states and 21511 transitions. [2021-12-06 19:15:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 15505 states and 21511 transitions. [2021-12-06 19:15:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 19:15:15,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:15,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2021-12-06 19:15:15,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:15:15,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:15,572 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1840869217, now seen corresponding path program 1 times [2021-12-06 19:15:15,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:15,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149656865] [2021-12-06 19:15:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:15,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:15:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:15:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:15:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:15:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:15:15,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:15,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149656865] [2021-12-06 19:15:15,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149656865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:15,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652815339] [2021-12-06 19:15:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:15,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:15,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:15,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:15,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:15:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:15,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:15,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 19:15:15,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:15,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652815339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:15,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:15,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:15,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111165935] [2021-12-06 19:15:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:15,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:15,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:15,849 INFO L87 Difference]: Start difference. First operand 15505 states and 21511 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:16,319 INFO L93 Difference]: Finished difference Result 32538 states and 45049 transitions. [2021-12-06 19:15:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2021-12-06 19:15:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:16,357 INFO L225 Difference]: With dead ends: 32538 [2021-12-06 19:15:16,357 INFO L226 Difference]: Without dead ends: 17045 [2021-12-06 19:15:16,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:16,381 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 130 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:16,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 374 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17045 states. [2021-12-06 19:15:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17045 to 16905. [2021-12-06 19:15:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16905 states, 14396 states have (on average 1.3505140316754654) internal successors, (19442), 14562 states have internal predecessors, (19442), 1358 states have call successors, (1358), 1023 states have call predecessors, (1358), 1150 states have return successors, (2111), 1335 states have call predecessors, (2111), 1356 states have call successors, (2111) [2021-12-06 19:15:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16905 states to 16905 states and 22911 transitions. [2021-12-06 19:15:17,117 INFO L78 Accepts]: Start accepts. Automaton has 16905 states and 22911 transitions. Word has length 159 [2021-12-06 19:15:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:17,118 INFO L470 AbstractCegarLoop]: Abstraction has 16905 states and 22911 transitions. [2021-12-06 19:15:17,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 16905 states and 22911 transitions. [2021-12-06 19:15:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:17,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:17,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1] [2021-12-06 19:15:17,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:15:17,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:15:17,347 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 740866845, now seen corresponding path program 1 times [2021-12-06 19:15:17,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:17,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561742515] [2021-12-06 19:15:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:17,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:15:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 19:15:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:15:17,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561742515] [2021-12-06 19:15:17,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561742515] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953319987] [2021-12-06 19:15:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:17,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:17,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:15:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:17,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:17,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 19:15:17,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:17,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953319987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:17,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:17,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430076428] [2021-12-06 19:15:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:17,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:17,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:17,646 INFO L87 Difference]: Start difference. First operand 16905 states and 22911 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:18,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:18,535 INFO L93 Difference]: Finished difference Result 49878 states and 68158 transitions. [2021-12-06 19:15:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:18,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 160 [2021-12-06 19:15:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:18,605 INFO L225 Difference]: With dead ends: 49878 [2021-12-06 19:15:18,605 INFO L226 Difference]: Without dead ends: 32985 [2021-12-06 19:15:18,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:18,628 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 163 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:18,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 549 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32985 states. [2021-12-06 19:15:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32985 to 32941. [2021-12-06 19:15:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32941 states, 28041 states have (on average 1.3411076637780392) internal successors, (37606), 28372 states have internal predecessors, (37606), 2637 states have call successors, (2637), 2007 states have call predecessors, (2637), 2262 states have return successors, (4710), 2593 states have call predecessors, (4710), 2635 states have call successors, (4710) [2021-12-06 19:15:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32941 states to 32941 states and 44953 transitions. [2021-12-06 19:15:19,747 INFO L78 Accepts]: Start accepts. Automaton has 32941 states and 44953 transitions. Word has length 160 [2021-12-06 19:15:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:19,747 INFO L470 AbstractCegarLoop]: Abstraction has 32941 states and 44953 transitions. [2021-12-06 19:15:19,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 32941 states and 44953 transitions. [2021-12-06 19:15:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:19,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:19,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:19,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:15:19,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:15:19,986 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2091960737, now seen corresponding path program 1 times [2021-12-06 19:15:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:19,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774192267] [2021-12-06 19:15:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:19,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:15:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 19:15:20,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:20,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774192267] [2021-12-06 19:15:20,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774192267] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:20,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512213889] [2021-12-06 19:15:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:20,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:20,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:20,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:20,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:15:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:20,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:20,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:15:20,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:20,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512213889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:20,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:20,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:20,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427674740] [2021-12-06 19:15:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:20,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:20,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:20,285 INFO L87 Difference]: Start difference. First operand 32941 states and 44953 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:21,368 INFO L93 Difference]: Finished difference Result 54646 states and 75917 transitions. [2021-12-06 19:15:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2021-12-06 19:15:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:21,444 INFO L225 Difference]: With dead ends: 54646 [2021-12-06 19:15:21,444 INFO L226 Difference]: Without dead ends: 28066 [2021-12-06 19:15:21,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:21,496 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 123 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:21,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 222 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:21,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28066 states. [2021-12-06 19:15:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28066 to 20182. [2021-12-06 19:15:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20182 states, 17220 states have (on average 1.2998257839721254) internal successors, (22383), 17395 states have internal predecessors, (22383), 1597 states have call successors, (1597), 1237 states have call predecessors, (1597), 1364 states have return successors, (2530), 1565 states have call predecessors, (2530), 1595 states have call successors, (2530) [2021-12-06 19:15:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20182 states to 20182 states and 26510 transitions. [2021-12-06 19:15:22,474 INFO L78 Accepts]: Start accepts. Automaton has 20182 states and 26510 transitions. Word has length 160 [2021-12-06 19:15:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:22,474 INFO L470 AbstractCegarLoop]: Abstraction has 20182 states and 26510 transitions. [2021-12-06 19:15:22,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20182 states and 26510 transitions. [2021-12-06 19:15:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:22,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:22,491 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:22,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 19:15:22,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 19:15:22,692 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1447536284, now seen corresponding path program 1 times [2021-12-06 19:15:22,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:22,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21782042] [2021-12-06 19:15:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:22,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:15:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:15:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:15:22,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:22,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21782042] [2021-12-06 19:15:22,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21782042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:22,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356198418] [2021-12-06 19:15:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:22,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:22,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:22,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:15:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:22,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:15:22,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:22,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356198418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:22,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352701250] [2021-12-06 19:15:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:22,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:22,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:22,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:22,981 INFO L87 Difference]: Start difference. First operand 20182 states and 26510 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:24,094 INFO L93 Difference]: Finished difference Result 57486 states and 76378 transitions. [2021-12-06 19:15:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 160 [2021-12-06 19:15:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:24,167 INFO L225 Difference]: With dead ends: 57486 [2021-12-06 19:15:24,167 INFO L226 Difference]: Without dead ends: 37321 [2021-12-06 19:15:24,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:24,193 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 150 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:24,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 540 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37321 states. [2021-12-06 19:15:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37321 to 37317. [2021-12-06 19:15:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37317 states, 31725 states have (on average 1.2904018912529551) internal successors, (40938), 32074 states have internal predecessors, (40938), 3027 states have call successors, (3027), 2309 states have call predecessors, (3027), 2564 states have return successors, (5602), 2965 states have call predecessors, (5602), 3025 states have call successors, (5602) [2021-12-06 19:15:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37317 states to 37317 states and 49567 transitions. [2021-12-06 19:15:25,588 INFO L78 Accepts]: Start accepts. Automaton has 37317 states and 49567 transitions. Word has length 160 [2021-12-06 19:15:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:25,588 INFO L470 AbstractCegarLoop]: Abstraction has 37317 states and 49567 transitions. [2021-12-06 19:15:25,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37317 states and 49567 transitions. [2021-12-06 19:15:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:25,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:25,615 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2021-12-06 19:15:25,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:15:25,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 19:15:25,817 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1243097865, now seen corresponding path program 1 times [2021-12-06 19:15:25,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:25,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985620131] [2021-12-06 19:15:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:25,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:15:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:15:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 19:15:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-06 19:15:25,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985620131] [2021-12-06 19:15:25,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985620131] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465860919] [2021-12-06 19:15:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:25,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:25,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:25,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:15:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:25,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 19:15:26,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:26,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465860919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:26,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:26,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:26,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667177671] [2021-12-06 19:15:26,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:26,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:26,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:26,089 INFO L87 Difference]: Start difference. First operand 37317 states and 49567 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:27,219 INFO L93 Difference]: Finished difference Result 66696 states and 88559 transitions. [2021-12-06 19:15:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:27,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2021-12-06 19:15:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:27,375 INFO L225 Difference]: With dead ends: 66696 [2021-12-06 19:15:27,375 INFO L226 Difference]: Without dead ends: 37895 [2021-12-06 19:15:27,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:27,412 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 149 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:27,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 402 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37895 states. [2021-12-06 19:15:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37895 to 37317. [2021-12-06 19:15:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37317 states, 31725 states have (on average 1.283845547675335) internal successors, (40730), 32074 states have internal predecessors, (40730), 3027 states have call successors, (3027), 2309 states have call predecessors, (3027), 2564 states have return successors, (5602), 2965 states have call predecessors, (5602), 3025 states have call successors, (5602) [2021-12-06 19:15:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37317 states to 37317 states and 49359 transitions. [2021-12-06 19:15:29,253 INFO L78 Accepts]: Start accepts. Automaton has 37317 states and 49359 transitions. Word has length 160 [2021-12-06 19:15:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:29,254 INFO L470 AbstractCegarLoop]: Abstraction has 37317 states and 49359 transitions. [2021-12-06 19:15:29,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 37317 states and 49359 transitions. [2021-12-06 19:15:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:29,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:29,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1] [2021-12-06 19:15:29,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:15:29,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 19:15:29,483 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -924686934, now seen corresponding path program 1 times [2021-12-06 19:15:29,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:29,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706542762] [2021-12-06 19:15:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:29,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:15:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:15:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:15:29,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706542762] [2021-12-06 19:15:29,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706542762] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304309992] [2021-12-06 19:15:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:29,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:29,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:29,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:15:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:29,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:29,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 19:15:29,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:29,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304309992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:29,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:29,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:29,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440190873] [2021-12-06 19:15:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:29,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:29,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:29,713 INFO L87 Difference]: Start difference. First operand 37317 states and 49359 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:30,917 INFO L93 Difference]: Finished difference Result 66439 states and 87931 transitions. [2021-12-06 19:15:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2021-12-06 19:15:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:31,003 INFO L225 Difference]: With dead ends: 66439 [2021-12-06 19:15:31,003 INFO L226 Difference]: Without dead ends: 38303 [2021-12-06 19:15:31,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:31,043 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 148 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:31,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 415 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38303 states. [2021-12-06 19:15:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38303 to 37273. [2021-12-06 19:15:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37273 states, 31681 states have (on average 1.27767431583599) internal successors, (40478), 32030 states have internal predecessors, (40478), 3027 states have call successors, (3027), 2309 states have call predecessors, (3027), 2564 states have return successors, (5602), 2965 states have call predecessors, (5602), 3025 states have call successors, (5602) [2021-12-06 19:15:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37273 states to 37273 states and 49107 transitions. [2021-12-06 19:15:32,513 INFO L78 Accepts]: Start accepts. Automaton has 37273 states and 49107 transitions. Word has length 160 [2021-12-06 19:15:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:32,514 INFO L470 AbstractCegarLoop]: Abstraction has 37273 states and 49107 transitions. [2021-12-06 19:15:32,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 19:15:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 37273 states and 49107 transitions. [2021-12-06 19:15:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:32,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:32,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2021-12-06 19:15:32,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 19:15:32,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:15:32,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1962226697, now seen corresponding path program 1 times [2021-12-06 19:15:32,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:32,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427330326] [2021-12-06 19:15:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:32,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:15:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:15:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 19:15:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-06 19:15:32,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427330326] [2021-12-06 19:15:32,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427330326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:32,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:32,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:15:32,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016701357] [2021-12-06 19:15:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:32,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:32,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:15:32,793 INFO L87 Difference]: Start difference. First operand 37273 states and 49107 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:15:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:34,254 INFO L93 Difference]: Finished difference Result 73684 states and 96266 transitions. [2021-12-06 19:15:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2021-12-06 19:15:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:34,345 INFO L225 Difference]: With dead ends: 73684 [2021-12-06 19:15:34,345 INFO L226 Difference]: Without dead ends: 36426 [2021-12-06 19:15:34,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:34,401 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 295 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 340 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:15:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36426 states. [2021-12-06 19:15:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36426 to 33688. [2021-12-06 19:15:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33688 states, 28868 states have (on average 1.276880975474574) internal successors, (36861), 29506 states have internal predecessors, (36861), 2309 states have call successors, (2309), 1773 states have call predecessors, (2309), 2510 states have return successors, (4633), 2424 states have call predecessors, (4633), 2307 states have call successors, (4633) [2021-12-06 19:15:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33688 states to 33688 states and 43803 transitions. [2021-12-06 19:15:35,922 INFO L78 Accepts]: Start accepts. Automaton has 33688 states and 43803 transitions. Word has length 160 [2021-12-06 19:15:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:35,922 INFO L470 AbstractCegarLoop]: Abstraction has 33688 states and 43803 transitions. [2021-12-06 19:15:35,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:15:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33688 states and 43803 transitions. [2021-12-06 19:15:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:15:35,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:35,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1, 1] [2021-12-06 19:15:35,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:15:35,946 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash -32521304, now seen corresponding path program 1 times [2021-12-06 19:15:35,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:35,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490080782] [2021-12-06 19:15:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:35,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:15:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:15:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:15:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:15:35,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:35,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490080782] [2021-12-06 19:15:35,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490080782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:35,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:35,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:15:35,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022253804] [2021-12-06 19:15:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:35,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:35,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:15:35,995 INFO L87 Difference]: Start difference. First operand 33688 states and 43803 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:15:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:37,155 INFO L93 Difference]: Finished difference Result 61428 states and 79737 transitions. [2021-12-06 19:15:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:37,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2021-12-06 19:15:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:37,217 INFO L225 Difference]: With dead ends: 61428 [2021-12-06 19:15:37,217 INFO L226 Difference]: Without dead ends: 27751 [2021-12-06 19:15:37,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:37,262 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 295 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:37,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 338 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:15:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27751 states. [2021-12-06 19:15:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27751 to 25142. [2021-12-06 19:15:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 21588 states have (on average 1.2871965906985363) internal successors, (27788), 22035 states have internal predecessors, (27788), 1719 states have call successors, (1719), 1327 states have call predecessors, (1719), 1834 states have return successors, (3243), 1787 states have call predecessors, (3243), 1717 states have call successors, (3243) [2021-12-06 19:15:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 32750 transitions. [2021-12-06 19:15:38,389 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 32750 transitions. Word has length 160 [2021-12-06 19:15:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:38,389 INFO L470 AbstractCegarLoop]: Abstraction has 25142 states and 32750 transitions. [2021-12-06 19:15:38,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:15:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 32750 transitions. [2021-12-06 19:15:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 19:15:38,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:38,406 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2021-12-06 19:15:38,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:15:38,406 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1152046593, now seen corresponding path program 1 times [2021-12-06 19:15:38,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:38,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223281965] [2021-12-06 19:15:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:38,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:15:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 19:15:38,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:38,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223281965] [2021-12-06 19:15:38,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223281965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:38,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028156902] [2021-12-06 19:15:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:38,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:38,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:38,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:15:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:38,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:38,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 19:15:38,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:38,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028156902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:38,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:38,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:38,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828748829] [2021-12-06 19:15:38,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:38,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:38,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:38,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:38,639 INFO L87 Difference]: Start difference. First operand 25142 states and 32750 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:39,558 INFO L93 Difference]: Finished difference Result 42267 states and 56594 transitions. [2021-12-06 19:15:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2021-12-06 19:15:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:39,615 INFO L225 Difference]: With dead ends: 42267 [2021-12-06 19:15:39,615 INFO L226 Difference]: Without dead ends: 25260 [2021-12-06 19:15:39,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:39,647 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 142 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:39,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 461 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25260 states. [2021-12-06 19:15:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25260 to 25142. [2021-12-06 19:15:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 21588 states have (on average 1.2639429312581063) internal successors, (27286), 22035 states have internal predecessors, (27286), 1719 states have call successors, (1719), 1327 states have call predecessors, (1719), 1834 states have return successors, (3243), 1787 states have call predecessors, (3243), 1717 states have call successors, (3243) [2021-12-06 19:15:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 32248 transitions. [2021-12-06 19:15:40,730 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 32248 transitions. Word has length 162 [2021-12-06 19:15:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:40,730 INFO L470 AbstractCegarLoop]: Abstraction has 25142 states and 32248 transitions. [2021-12-06 19:15:40,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 32248 transitions. [2021-12-06 19:15:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 19:15:40,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:40,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1] [2021-12-06 19:15:40,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:15:40,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:40,949 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash 179847711, now seen corresponding path program 1 times [2021-12-06 19:15:40,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714866715] [2021-12-06 19:15:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:40,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:40,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:15:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 19:15:41,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:41,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714866715] [2021-12-06 19:15:41,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714866715] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:41,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579982960] [2021-12-06 19:15:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:41,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:41,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:41,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:15:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:41,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:15:41,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 19:15:41,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:41,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579982960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:41,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:41,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:41,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146373967] [2021-12-06 19:15:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:41,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:41,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:41,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:41,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:41,205 INFO L87 Difference]: Start difference. First operand 25142 states and 32248 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:42,105 INFO L93 Difference]: Finished difference Result 47063 states and 61427 transitions. [2021-12-06 19:15:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2021-12-06 19:15:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:42,152 INFO L225 Difference]: With dead ends: 47063 [2021-12-06 19:15:42,152 INFO L226 Difference]: Without dead ends: 23084 [2021-12-06 19:15:42,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:42,190 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 163 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:42,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 220 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23084 states. [2021-12-06 19:15:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23084 to 21819. [2021-12-06 19:15:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21819 states, 18787 states have (on average 1.2295204130515782) internal successors, (23099), 19154 states have internal predecessors, (23099), 1471 states have call successors, (1471), 1139 states have call predecessors, (1471), 1560 states have return successors, (2573), 1529 states have call predecessors, (2573), 1469 states have call successors, (2573) [2021-12-06 19:15:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 27143 transitions. [2021-12-06 19:15:43,156 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 27143 transitions. Word has length 162 [2021-12-06 19:15:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:43,156 INFO L470 AbstractCegarLoop]: Abstraction has 21819 states and 27143 transitions. [2021-12-06 19:15:43,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 27143 transitions. [2021-12-06 19:15:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 19:15:43,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:43,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1] [2021-12-06 19:15:43,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 19:15:43,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:43,369 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:43,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -841833728, now seen corresponding path program 1 times [2021-12-06 19:15:43,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:43,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038599837] [2021-12-06 19:15:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:43,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:15:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:15:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-06 19:15:43,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038599837] [2021-12-06 19:15:43,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038599837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053832169] [2021-12-06 19:15:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:43,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:43,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:43,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:43,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:15:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:43,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:43,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:15:43,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:43,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053832169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:43,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:43,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:43,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282596530] [2021-12-06 19:15:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:43,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:43,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:43,601 INFO L87 Difference]: Start difference. First operand 21819 states and 27143 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:44,437 INFO L93 Difference]: Finished difference Result 37441 states and 47801 transitions. [2021-12-06 19:15:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2021-12-06 19:15:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:44,483 INFO L225 Difference]: With dead ends: 37441 [2021-12-06 19:15:44,483 INFO L226 Difference]: Without dead ends: 21923 [2021-12-06 19:15:44,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:44,509 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 135 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:44,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 503 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21923 states. [2021-12-06 19:15:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21923 to 21819. [2021-12-06 19:15:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21819 states, 18787 states have (on average 1.2024804386011603) internal successors, (22591), 19154 states have internal predecessors, (22591), 1471 states have call successors, (1471), 1139 states have call predecessors, (1471), 1560 states have return successors, (2573), 1529 states have call predecessors, (2573), 1469 states have call successors, (2573) [2021-12-06 19:15:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 26635 transitions. [2021-12-06 19:15:45,485 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 26635 transitions. Word has length 162 [2021-12-06 19:15:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:45,485 INFO L470 AbstractCegarLoop]: Abstraction has 21819 states and 26635 transitions. [2021-12-06 19:15:45,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 19:15:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 26635 transitions. [2021-12-06 19:15:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 19:15:45,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:45,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1, 1] [2021-12-06 19:15:45,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:15:45,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:45,697 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -292288290, now seen corresponding path program 1 times [2021-12-06 19:15:45,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:45,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065184837] [2021-12-06 19:15:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:45,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:15:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 19:15:45,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:45,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065184837] [2021-12-06 19:15:45,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065184837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:45,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212845594] [2021-12-06 19:15:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:45,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:45,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:45,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:15:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:45,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:15:45,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 19:15:45,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:45,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212845594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:45,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:45,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 19:15:45,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802799161] [2021-12-06 19:15:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:45,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:15:45,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:15:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:45,954 INFO L87 Difference]: Start difference. First operand 21819 states and 26635 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:46,794 INFO L93 Difference]: Finished difference Result 35688 states and 44707 transitions. [2021-12-06 19:15:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:15:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2021-12-06 19:15:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:46,837 INFO L225 Difference]: With dead ends: 35688 [2021-12-06 19:15:46,837 INFO L226 Difference]: Without dead ends: 21867 [2021-12-06 19:15:46,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:15:46,864 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 156 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:46,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 463 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21867 states. [2021-12-06 19:15:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21867 to 21819. [2021-12-06 19:15:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21819 states, 18787 states have (on average 1.1889604513759515) internal successors, (22337), 19154 states have internal predecessors, (22337), 1471 states have call successors, (1471), 1139 states have call predecessors, (1471), 1560 states have return successors, (2573), 1529 states have call predecessors, (2573), 1469 states have call successors, (2573) [2021-12-06 19:15:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 26381 transitions. [2021-12-06 19:15:47,859 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 26381 transitions. Word has length 163 [2021-12-06 19:15:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:47,860 INFO L470 AbstractCegarLoop]: Abstraction has 21819 states and 26381 transitions. [2021-12-06 19:15:47,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:15:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 26381 transitions. [2021-12-06 19:15:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 19:15:47,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:47,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:47,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:15:48,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 19:15:48,072 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash 327768535, now seen corresponding path program 1 times [2021-12-06 19:15:48,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:48,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2983986] [2021-12-06 19:15:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:48,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:15:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 19:15:48,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:48,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2983986] [2021-12-06 19:15:48,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2983986] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:48,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404054072] [2021-12-06 19:15:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:48,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:48,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:48,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:15:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:48,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:15:48,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 19:15:48,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404054072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-12-06 19:15:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643307547] [2021-12-06 19:15:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:48,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:48,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:15:48,374 INFO L87 Difference]: Start difference. First operand 21819 states and 26381 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:49,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:49,153 INFO L93 Difference]: Finished difference Result 30074 states and 36610 transitions. [2021-12-06 19:15:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:15:49,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 19:15:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:49,183 INFO L225 Difference]: With dead ends: 30074 [2021-12-06 19:15:49,183 INFO L226 Difference]: Without dead ends: 15972 [2021-12-06 19:15:49,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:15:49,202 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 187 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:49,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 347 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:15:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15972 states. [2021-12-06 19:15:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15972 to 15912. [2021-12-06 19:15:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 13716 states have (on average 1.17198891805191) internal successors, (16075), 13964 states have internal predecessors, (16075), 1077 states have call successors, (1077), 829 states have call predecessors, (1077), 1118 states have return successors, (1821), 1120 states have call predecessors, (1821), 1075 states have call successors, (1821) [2021-12-06 19:15:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 18973 transitions. [2021-12-06 19:15:49,930 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 18973 transitions. Word has length 164 [2021-12-06 19:15:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:49,930 INFO L470 AbstractCegarLoop]: Abstraction has 15912 states and 18973 transitions. [2021-12-06 19:15:49,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 18973 transitions. [2021-12-06 19:15:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 19:15:49,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:49,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:49,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:15:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 19:15:50,137 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash 815815641, now seen corresponding path program 1 times [2021-12-06 19:15:50,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:50,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345797535] [2021-12-06 19:15:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:50,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:15:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:15:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-06 19:15:50,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:50,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345797535] [2021-12-06 19:15:50,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345797535] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:50,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401048960] [2021-12-06 19:15:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:50,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:50,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:50,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:15:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:50,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:15:50,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-06 19:15:50,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:50,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401048960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:50,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:50,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 19:15:50,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16852000] [2021-12-06 19:15:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:50,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:50,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:50,424 INFO L87 Difference]: Start difference. First operand 15912 states and 18973 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:51,113 INFO L93 Difference]: Finished difference Result 29801 states and 36019 transitions. [2021-12-06 19:15:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:51,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 19:15:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:51,138 INFO L225 Difference]: With dead ends: 29801 [2021-12-06 19:15:51,138 INFO L226 Difference]: Without dead ends: 13900 [2021-12-06 19:15:51,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:15:51,160 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 87 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:51,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 736 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13900 states. [2021-12-06 19:15:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13900 to 13328. [2021-12-06 19:15:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13328 states, 11381 states have (on average 1.1476144451278447) internal successors, (13061), 11591 states have internal predecessors, (13061), 958 states have call successors, (958), 737 states have call predecessors, (958), 988 states have return successors, (1535), 1001 states have call predecessors, (1535), 956 states have call successors, (1535) [2021-12-06 19:15:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13328 states to 13328 states and 15554 transitions. [2021-12-06 19:15:51,844 INFO L78 Accepts]: Start accepts. Automaton has 13328 states and 15554 transitions. Word has length 164 [2021-12-06 19:15:51,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:51,844 INFO L470 AbstractCegarLoop]: Abstraction has 13328 states and 15554 transitions. [2021-12-06 19:15:51,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13328 states and 15554 transitions. [2021-12-06 19:15:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 19:15:51,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:51,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:51,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 19:15:52,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 19:15:52,051 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -950903894, now seen corresponding path program 1 times [2021-12-06 19:15:52,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:52,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034325907] [2021-12-06 19:15:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:52,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:15:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:15:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 19:15:52,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:52,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034325907] [2021-12-06 19:15:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034325907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:52,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797169681] [2021-12-06 19:15:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:52,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:52,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:52,143 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:52,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 19:15:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:52,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:15:52,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:15:52,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:52,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797169681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:52,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:52,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 19:15:52,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435313170] [2021-12-06 19:15:52,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:52,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:52,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:52,319 INFO L87 Difference]: Start difference. First operand 13328 states and 15554 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:52,853 INFO L93 Difference]: Finished difference Result 24593 states and 29078 transitions. [2021-12-06 19:15:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 19:15:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:52,873 INFO L225 Difference]: With dead ends: 24593 [2021-12-06 19:15:52,874 INFO L226 Difference]: Without dead ends: 11276 [2021-12-06 19:15:52,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:15:52,891 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 49 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:52,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 726 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:52,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-12-06 19:15:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 10980. [2021-12-06 19:15:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10980 states, 9342 states have (on average 1.1294155427103405) internal successors, (10551), 9502 states have internal predecessors, (10551), 815 states have call successors, (815), 621 states have call predecessors, (815), 822 states have return successors, (1201), 858 states have call predecessors, (1201), 813 states have call successors, (1201) [2021-12-06 19:15:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 12567 transitions. [2021-12-06 19:15:53,448 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 12567 transitions. Word has length 164 [2021-12-06 19:15:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:53,449 INFO L470 AbstractCegarLoop]: Abstraction has 10980 states and 12567 transitions. [2021-12-06 19:15:53,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 12567 transitions. [2021-12-06 19:15:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 19:15:53,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:53,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:53,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 19:15:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:53,653 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1119292316, now seen corresponding path program 1 times [2021-12-06 19:15:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:53,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332627099] [2021-12-06 19:15:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:15:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:15:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:15:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:15:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 19:15:53,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332627099] [2021-12-06 19:15:53,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332627099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:15:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391667038] [2021-12-06 19:15:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:53,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:15:53,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:15:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 19:15:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:53,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:15:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:15:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-06 19:15:53,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:15:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391667038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:53,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:15:53,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 19:15:53,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331045286] [2021-12-06 19:15:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:53,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:53,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:53,895 INFO L87 Difference]: Start difference. First operand 10980 states and 12567 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:54,173 INFO L93 Difference]: Finished difference Result 16293 states and 18722 transitions. [2021-12-06 19:15:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2021-12-06 19:15:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:54,179 INFO L225 Difference]: With dead ends: 16293 [2021-12-06 19:15:54,179 INFO L226 Difference]: Without dead ends: 3288 [2021-12-06 19:15:54,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:15:54,189 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 10 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:54,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 711 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:15:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2021-12-06 19:15:54,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3288. [2021-12-06 19:15:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 2793 states have (on average 1.1016827783745078) internal successors, (3077), 2815 states have internal predecessors, (3077), 278 states have call successors, (278), 201 states have call predecessors, (278), 216 states have return successors, (301), 273 states have call predecessors, (301), 276 states have call successors, (301) [2021-12-06 19:15:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 3656 transitions. [2021-12-06 19:15:54,341 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 3656 transitions. Word has length 164 [2021-12-06 19:15:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:54,341 INFO L470 AbstractCegarLoop]: Abstraction has 3288 states and 3656 transitions. [2021-12-06 19:15:54,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:15:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 3656 transitions. [2021-12-06 19:15:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 19:15:54,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:54,343 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:54,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 19:15:54,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:15:54,544 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1437280244, now seen corresponding path program 1 times [2021-12-06 19:15:54,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:54,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125966942] [2021-12-06 19:15:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:54,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:15:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 19:15:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 19:15:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 19:15:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:15:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 19:15:54,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125966942] [2021-12-06 19:15:54,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125966942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:54,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:54,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:15:54,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136851580] [2021-12-06 19:15:54,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:54,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:15:54,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:15:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:15:54,664 INFO L87 Difference]: Start difference. First operand 3288 states and 3656 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 6 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 19:15:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:55,272 INFO L93 Difference]: Finished difference Result 3506 states and 3881 transitions. [2021-12-06 19:15:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:15:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 6 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 202 [2021-12-06 19:15:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:55,279 INFO L225 Difference]: With dead ends: 3506 [2021-12-06 19:15:55,279 INFO L226 Difference]: Without dead ends: 3503 [2021-12-06 19:15:55,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:15:55,281 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 676 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:55,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 901 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:15:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-12-06 19:15:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3287. [2021-12-06 19:15:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 2793 states have (on average 1.100250626566416) internal successors, (3073), 2814 states have internal predecessors, (3073), 277 states have call successors, (277), 201 states have call predecessors, (277), 216 states have return successors, (301), 273 states have call predecessors, (301), 276 states have call successors, (301) [2021-12-06 19:15:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 3651 transitions. [2021-12-06 19:15:55,451 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 3651 transitions. Word has length 202 [2021-12-06 19:15:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:55,452 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 3651 transitions. [2021-12-06 19:15:55,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 6 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 19:15:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 3651 transitions. [2021-12-06 19:15:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 19:15:55,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:55,454 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:55,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 19:15:55,454 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -611652260, now seen corresponding path program 1 times [2021-12-06 19:15:55,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:55,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306336892] [2021-12-06 19:15:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:55,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:15:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:15:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:15:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:15:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:15:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 19:15:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 19:15:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 19:15:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 19:15:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:15:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-06 19:15:55,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306336892] [2021-12-06 19:15:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306336892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:55,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:15:55,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155362672] [2021-12-06 19:15:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:55,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:15:55,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:15:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:15:55,526 INFO L87 Difference]: Start difference. First operand 3287 states and 3651 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:15:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:55,886 INFO L93 Difference]: Finished difference Result 5330 states and 6022 transitions. [2021-12-06 19:15:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:15:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 206 [2021-12-06 19:15:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:55,893 INFO L225 Difference]: With dead ends: 5330 [2021-12-06 19:15:55,893 INFO L226 Difference]: Without dead ends: 3951 [2021-12-06 19:15:55,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:15:55,896 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 195 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:55,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 584 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:15:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-12-06 19:15:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3291. [2021-12-06 19:15:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2797 states have (on average 1.1001072577761888) internal successors, (3077), 2818 states have internal predecessors, (3077), 277 states have call successors, (277), 201 states have call predecessors, (277), 216 states have return successors, (301), 273 states have call predecessors, (301), 276 states have call successors, (301) [2021-12-06 19:15:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 3655 transitions. [2021-12-06 19:15:56,067 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 3655 transitions. Word has length 206 [2021-12-06 19:15:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:56,067 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 3655 transitions. [2021-12-06 19:15:56,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:15:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 3655 transitions. [2021-12-06 19:15:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 19:15:56,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:56,070 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:56,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 19:15:56,070 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -552168776, now seen corresponding path program 1 times [2021-12-06 19:15:56,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:56,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895869917] [2021-12-06 19:15:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:56,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:15:56,082 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:15:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:15:56,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:15:56,143 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:15:56,143 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:15:56,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 19:15:56,147 INFO L732 BasicCegarLoop]: Path program histogram: [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] [2021-12-06 19:15:56,149 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:15:56,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:15:56 BoogieIcfgContainer [2021-12-06 19:15:56,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:15:56,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:15:56,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:15:56,262 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:15:56,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:15:05" (3/4) ... [2021-12-06 19:15:56,264 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:15:56,369 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:15:56,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:15:56,369 INFO L158 Benchmark]: Toolchain (without parser) took 51661.65ms. Allocated memory was 107.0MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 73.7MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2021-12-06 19:15:56,370 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:15:56,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.75ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 81.0MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:15:56,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.55ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:15:56,370 INFO L158 Benchmark]: Boogie Preprocessor took 29.51ms. Allocated memory is still 107.0MB. Free memory was 78.9MB in the beginning and 77.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:15:56,371 INFO L158 Benchmark]: RCFGBuilder took 396.25ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 59.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 19:15:56,371 INFO L158 Benchmark]: TraceAbstraction took 50833.85ms. Allocated memory was 107.0MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 58.9MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2021-12-06 19:15:56,371 INFO L158 Benchmark]: Witness Printer took 107.42ms. Allocated memory is still 3.2GB. Free memory was 1.3GB in the beginning and 1.2GB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-06 19:15:56,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.75ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 81.0MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.55ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.51ms. Allocated memory is still 107.0MB. Free memory was 78.9MB in the beginning and 77.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 396.25ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 59.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 50833.85ms. Allocated memory was 107.0MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 58.9MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 107.42ms. Allocated memory is still 3.2GB. Free memory was 1.3GB in the beginning and 1.2GB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int t2_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int t2_st ; [L30] int m_i ; [L31] int t1_i ; [L32] int t2_i ; [L33] int M_E = 2; [L34] int T1_E = 2; [L35] int T2_E = 2; [L36] int E_M = 2; [L37] int E_1 = 2; [L38] int E_2 = 2; [L43] int token ; [L45] int local ; VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L610] int __retres1 ; [L614] CALL init_model() [L524] m_i = 1 [L525] t1_i = 1 [L526] t2_i = 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L614] RET init_model() [L615] CALL start_simulation() [L551] int kernel_st ; [L552] int tmp ; [L553] int tmp___0 ; [L557] kernel_st = 0 VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L558] FCALL update_channels() VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L559] CALL init_threads() [L243] COND TRUE m_i == 1 [L244] m_st = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L248] COND TRUE t1_i == 1 [L249] t1_st = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L253] COND TRUE t2_i == 1 [L254] t2_st = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L559] RET init_threads() [L560] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L356] COND FALSE !(M_E == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L361] COND FALSE !(T1_E == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L366] COND FALSE !(T2_E == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L371] COND FALSE !(E_M == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L376] COND FALSE !(E_1 == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L381] COND FALSE !(E_2 == 0) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L560] RET fire_delta_events() VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L561] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L178] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L188] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L190] return (__retres1); VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \result=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND FALSE !(\read(tmp)) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=0, token=0] [L443] CALL, EXPR is_transmit1_triggered() [L194] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L197] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L207] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L209] return (__retres1); VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \result=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND FALSE !(\read(tmp___0)) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=0, tmp___0=0, token=0] [L451] CALL, EXPR is_transmit2_triggered() [L213] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L216] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L226] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L228] return (__retres1); VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \result=0, __retres1=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND FALSE !(\read(tmp___1)) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=0, tmp___0=0, tmp___1=0, token=0] [L561] RET activate_threads() VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L562] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L394] COND FALSE !(M_E == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L399] COND FALSE !(T1_E == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L404] COND FALSE !(T2_E == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L409] COND FALSE !(E_M == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L414] COND FALSE !(E_1 == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L419] COND FALSE !(E_2 == 1) VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L562] RET reset_delta_events() VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L565] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L568] kernel_st = 1 [L569] CALL eval() [L289] int tmp ; VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L293] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L296] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L263] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L266] COND TRUE m_st == 0 [L267] __retres1 = 1 VAL [__retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L284] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L296] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L296] tmp = exists_runnable_thread() [L298] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L303] COND TRUE m_st == 0 [L304] int tmp_ndt_1; [L305] tmp_ndt_1 = __VERIFIER_nondet_int() [L306] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_1=0, token=0] [L317] COND TRUE t1_st == 0 [L318] int tmp_ndt_2; [L319] tmp_ndt_2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp_ndt_2) [L322] t1_st = 1 [L323] CALL transmit1() [L106] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L117] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L119] t1_pc = 1 [L120] t1_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L323] RET transmit1() [L331] COND TRUE t2_st == 0 [L332] int tmp_ndt_3; [L333] tmp_ndt_3 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp_ndt_3) [L336] t2_st = 1 [L337] CALL transmit2() [L142] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, token=0] [L153] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, token=0] [L155] t2_pc = 1 [L156] t2_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L337] RET transmit2() [L293] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=1, token=0] [L296] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L263] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L266] COND TRUE m_st == 0 [L267] __retres1 = 1 VAL [__retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L284] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L296] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=1, token=0] [L296] tmp = exists_runnable_thread() [L298] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=1, token=0] [L303] COND TRUE m_st == 0 [L304] int tmp_ndt_1; [L305] tmp_ndt_1 = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp_ndt_1) [L308] m_st = 1 [L309] CALL master() [L48] int tmp_var = __VERIFIER_nondet_int(); [L50] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L61] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L64] token = __VERIFIER_nondet_int() [L65] local = token [L66] E_1 = 1 VAL [E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L67] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L467] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L178] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L188] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L190] return (__retres1); VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \result=0, __retres1=0, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND FALSE !(\read(tmp)) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=0, token=0] [L443] CALL, EXPR is_transmit1_triggered() [L194] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L197] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L198] COND TRUE E_1 == 1 [L199] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=1, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L209] return (__retres1); VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \result=1, __retres1=1, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND TRUE \read(tmp___0) [L446] t1_st = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=0, tmp___0=1, token=0] [L451] CALL, EXPR is_transmit2_triggered() [L213] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L216] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L217] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L226] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L228] return (__retres1); VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \result=0, __retres1=0, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND FALSE !(\read(tmp___1)) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=0, tmp___0=1, tmp___1=0, token=0] [L467] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L67] RET immediate_notify() VAL [E_1=1, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L68] E_1 = 2 [L69] m_pc = 1 [L70] m_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L309] RET master() [L317] COND TRUE t1_st == 0 [L318] int tmp_ndt_2; [L319] tmp_ndt_2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp_ndt_2) [L322] t1_st = 1 [L323] CALL transmit1() [L106] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L109] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L125] token += 1 [L126] E_2 = 1 VAL [E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L127] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L467] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L178] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L179] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L188] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L190] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \result=0, __retres1=0, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND FALSE !(\read(tmp)) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=0, token=1] [L443] CALL, EXPR is_transmit1_triggered() [L194] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L197] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L198] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L207] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L209] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \result=0, __retres1=0, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND FALSE !(\read(tmp___0)) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=0, tmp___0=0, token=1] [L451] CALL, EXPR is_transmit2_triggered() [L213] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L216] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L217] COND TRUE E_2 == 1 [L218] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=1, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L228] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \result=1, __retres1=1, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND TRUE \read(tmp___1) [L454] t2_st = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, tmp=0, tmp___0=0, tmp___1=1, token=1] [L467] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L127] RET immediate_notify() VAL [E_1=2, E_2=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L128] E_2 = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L117] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L119] t1_pc = 1 [L120] t1_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L323] RET transmit1() [L331] COND TRUE t2_st == 0 [L332] int tmp_ndt_3; [L333] tmp_ndt_3 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp_ndt_3) [L336] t2_st = 1 [L337] CALL transmit2() [L142] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=1] [L145] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=1] [L161] token += 1 [L162] E_M = 1 VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L163] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L467] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L178] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L179] COND TRUE E_M == 1 [L180] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L190] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \result=1, __retres1=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND TRUE \read(tmp) [L438] m_st = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, tmp=1, token=2] [L443] CALL, EXPR is_transmit1_triggered() [L194] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L197] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L198] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L207] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L209] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \result=0, __retres1=0, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND FALSE !(\read(tmp___0)) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, tmp=1, tmp___0=0, token=2] [L451] CALL, EXPR is_transmit2_triggered() [L213] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L216] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L217] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L226] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L228] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \result=0, __retres1=0, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND FALSE !(\read(tmp___1)) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, tmp=1, tmp___0=0, tmp___1=0, token=2] [L467] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L163] RET immediate_notify() VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L164] E_M = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L153] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L155] t2_pc = 1 [L156] t2_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L337] RET transmit2() [L293] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=-1, tmp_ndt_2=1, tmp_ndt_3=1, token=2] [L296] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L263] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L266] COND TRUE m_st == 0 [L267] __retres1 = 1 VAL [__retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L284] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L296] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=-1, tmp_ndt_2=1, tmp_ndt_3=1, token=2] [L296] tmp = exists_runnable_thread() [L298] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=-1, tmp_ndt_2=1, tmp_ndt_3=1, token=2] [L303] COND TRUE m_st == 0 [L304] int tmp_ndt_1; [L305] tmp_ndt_1 = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp_ndt_1) [L308] m_st = 1 [L309] CALL master() [L48] int tmp_var = __VERIFIER_nondet_int(); [L50] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L53] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L75] COND FALSE !(token != local + 2) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L80] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L81] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L86] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L87] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L88] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L89] CALL error() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L20] reach_error() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 140 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.7s, OverallIterations: 30, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6896 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6723 mSDsluCounter, 15844 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8613 mSDsCounter, 787 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6260 IncrementalHoareTripleChecker+Invalid, 7047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 787 mSolverCounterUnsat, 7231 mSDtfsCounter, 6260 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3580 GetRequests, 3347 SyntacticMatches, 6 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37317occurred in iteration=15, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.6s AutomataMinimizationTime, 29 MinimizatonAttempts, 20431 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 6981 NumberOfCodeBlocks, 6981 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 6727 ConstructedInterpolants, 0 QuantifiedInterpolants, 10916 SizeOfPredicates, 9 NumberOfNonLiveVariables, 8988 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 47 InterpolantComputations, 29 PerfectInterpolantSequences, 3368/3904 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:15:56,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f3b1805-6708-4052-bd46-a171e7c19925/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE