./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro --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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:03:23,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:03:23,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:03:23,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:03:23,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:03:23,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:03:23,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:03:23,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:03:23,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:03:23,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:03:23,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:03:23,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:03:23,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:03:23,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:03:23,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:03:23,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:03:23,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:03:23,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:03:23,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:03:23,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:03:23,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:03:23,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:03:23,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:03:23,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:03:23,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:03:23,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:03:23,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:03:23,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:03:23,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:03:23,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:03:23,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:03:23,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:03:23,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:03:23,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:03:23,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:03:23,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:03:23,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:03:23,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:03:23,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:03:23,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:03:23,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:03:23,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:03:23,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:03:23,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:03:23,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:03:23,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:03:23,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:03:23,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:03:23,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:03:23,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:03:23,503 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:03:23,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:03:23,504 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:03:23,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:03:23,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:03:23,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:03:23,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:03:23,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:03:23,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:03:23,505 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:03:23,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:03:23,506 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:03:23,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:03:23,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:03:23,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:03:23,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:03:23,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:23,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:03:23,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:03:23,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:03:23,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:03:23,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:03:23,508 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:03:23,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:03:23,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:03:23,508 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_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2022-11-18 20:03:23,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:03:23,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:03:23,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:03:23,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:03:23,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:03:23,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-18 20:03:23,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/data/3fcdf09eb/b0bf7771e51840abaffc5d2e753d6a07/FLAG80985b6be [2022-11-18 20:03:24,436 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:03:24,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-18 20:03:24,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/data/3fcdf09eb/b0bf7771e51840abaffc5d2e753d6a07/FLAG80985b6be [2022-11-18 20:03:24,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/data/3fcdf09eb/b0bf7771e51840abaffc5d2e753d6a07 [2022-11-18 20:03:24,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:03:24,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:03:24,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:24,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:03:24,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:03:24,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:24" (1/1) ... [2022-11-18 20:03:24,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787c5410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:24, skipping insertion in model container [2022-11-18 20:03:24,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:24" (1/1) ... [2022-11-18 20:03:24,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:03:24,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:03:25,015 WARN L234 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_88488c74-8151-4de7-876a-a8f7efbd7e24/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-18 20:03:25,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:25,045 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:03:25,067 WARN L234 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_88488c74-8151-4de7-876a-a8f7efbd7e24/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-18 20:03:25,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:25,086 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:03:25,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25 WrapperNode [2022-11-18 20:03:25,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:25,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:25,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:03:25,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:03:25,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,121 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 20:03:25,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:25,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:03:25,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:03:25,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:03:25,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:03:25,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:03:25,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:03:25,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:03:25,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (1/1) ... [2022-11-18 20:03:25,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:25,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:03:25,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:03:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:03:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:03:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-18 20:03:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-18 20:03:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-18 20:03:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-18 20:03:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:03:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:03:25,309 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:03:25,312 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:03:25,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:03:25,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:03:25,496 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:03:25,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:25 BoogieIcfgContainer [2022-11-18 20:03:25,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:03:25,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:03:25,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:03:25,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:03:25,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:03:24" (1/3) ... [2022-11-18 20:03:25,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15121f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:25, skipping insertion in model container [2022-11-18 20:03:25,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:25" (2/3) ... [2022-11-18 20:03:25,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15121f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:25, skipping insertion in model container [2022-11-18 20:03:25,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:25" (3/3) ... [2022-11-18 20:03:25,522 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2022-11-18 20:03:25,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:03:25,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:03:25,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:03:25,631 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b08073b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:03:25,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:03:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:03:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:03:25,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:25,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:25,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2022-11-18 20:03:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:25,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797811662] [2022-11-18 20:03:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:26,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:26,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797811662] [2022-11-18 20:03:26,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797811662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:26,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:26,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:26,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848923091] [2022-11-18 20:03:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:26,050 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:03:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:26,132 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-11-18 20:03:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:26,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-18 20:03:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:26,143 INFO L225 Difference]: With dead ends: 39 [2022-11-18 20:03:26,143 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 20:03:26,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:26,150 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:26,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 20:03:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-18 20:03:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:03:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-18 20:03:26,193 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2022-11-18 20:03:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:26,194 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-18 20:03:26,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:03:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-18 20:03:26,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:03:26,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:26,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:26,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:03:26,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2022-11-18 20:03:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:26,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059069284] [2022-11-18 20:03:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:26,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:26,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:26,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059069284] [2022-11-18 20:03:26,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059069284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:26,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:26,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675097925] [2022-11-18 20:03:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:26,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:03:26,287 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:03:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:26,363 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-11-18 20:03:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:26,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-18 20:03:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:26,365 INFO L225 Difference]: With dead ends: 33 [2022-11-18 20:03:26,366 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:03:26,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:26,368 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:03:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-18 20:03:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:03:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-18 20:03:26,392 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2022-11-18 20:03:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:26,392 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-18 20:03:26,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:03:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-18 20:03:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:03:26,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:26,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:03:26,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:26,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2022-11-18 20:03:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:26,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593246101] [2022-11-18 20:03:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593246101] [2022-11-18 20:03:26,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593246101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51660108] [2022-11-18 20:03:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:26,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:26,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:26,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:03:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:03:26,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:26,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:27,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51660108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:27,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:27,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-11-18 20:03:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107327735] [2022-11-18 20:03:27,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:27,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:03:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:03:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:03:27,102 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:03:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:27,370 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-11-18 20:03:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:03:27,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-11-18 20:03:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:27,376 INFO L225 Difference]: With dead ends: 55 [2022-11-18 20:03:27,376 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 20:03:27,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:03:27,384 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:27,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 107 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 20:03:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-18 20:03:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 20:03:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-18 20:03:27,400 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2022-11-18 20:03:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:27,400 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-18 20:03:27,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:03:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-18 20:03:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:03:27,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:27,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:27,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:27,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:27,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2022-11-18 20:03:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:27,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349028538] [2022-11-18 20:03:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:27,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:27,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349028538] [2022-11-18 20:03:27,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349028538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:27,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358064732] [2022-11-18 20:03:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:27,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:27,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:27,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:27,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:03:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:03:27,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:27,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:03:28,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358064732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:28,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:28,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-18 20:03:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568120938] [2022-11-18 20:03:28,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:03:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:03:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:03:28,157 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 20:03:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:28,354 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-11-18 20:03:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:03:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-11-18 20:03:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:28,362 INFO L225 Difference]: With dead ends: 51 [2022-11-18 20:03:28,363 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 20:03:28,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:03:28,369 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:28,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 83 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:28,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 20:03:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-18 20:03:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-18 20:03:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-11-18 20:03:28,389 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2022-11-18 20:03:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-11-18 20:03:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 20:03:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-11-18 20:03:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:03:28,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:28,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:03:28,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:03:28,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:28,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2022-11-18 20:03:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:28,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993909621] [2022-11-18 20:03:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:03:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:28,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993909621] [2022-11-18 20:03:28,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993909621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:28,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946064570] [2022-11-18 20:03:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:28,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:28,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:28,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:28,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:03:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:28,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:03:29,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:03:29,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946064570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:29,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:29,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2022-11-18 20:03:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114471384] [2022-11-18 20:03:29,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:29,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:03:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:03:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:03:29,388 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-18 20:03:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:29,686 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2022-11-18 20:03:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:03:29,687 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2022-11-18 20:03:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:29,688 INFO L225 Difference]: With dead ends: 105 [2022-11-18 20:03:29,688 INFO L226 Difference]: Without dead ends: 63 [2022-11-18 20:03:29,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:03:29,690 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 66 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:29,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 123 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-18 20:03:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-18 20:03:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2022-11-18 20:03:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2022-11-18 20:03:29,702 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2022-11-18 20:03:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:29,702 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2022-11-18 20:03:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-18 20:03:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2022-11-18 20:03:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:03:29,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:29,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:03:29,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:29,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2022-11-18 20:03:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:29,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24671706] [2022-11-18 20:03:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:29,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:03:30,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:30,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24671706] [2022-11-18 20:03:30,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24671706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:30,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435887112] [2022-11-18 20:03:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:30,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:30,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:30,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:30,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:03:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:03:30,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:03:30,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435887112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:30,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:30,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2022-11-18 20:03:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421494] [2022-11-18 20:03:30,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:03:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:03:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:03:30,586 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-18 20:03:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:31,018 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2022-11-18 20:03:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:03:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2022-11-18 20:03:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:31,021 INFO L225 Difference]: With dead ends: 177 [2022-11-18 20:03:31,021 INFO L226 Difference]: Without dead ends: 117 [2022-11-18 20:03:31,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:03:31,023 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:31,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 195 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-18 20:03:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-11-18 20:03:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 69 states have internal predecessors, (80), 21 states have call successors, (21), 7 states have call predecessors, (21), 15 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2022-11-18 20:03:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2022-11-18 20:03:31,054 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2022-11-18 20:03:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:31,055 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2022-11-18 20:03:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-18 20:03:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2022-11-18 20:03:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:03:31,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:31,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-11-18 20:03:31,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:31,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:31,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2022-11-18 20:03:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:31,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345965837] [2022-11-18 20:03:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:03:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:03:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:31,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345965837] [2022-11-18 20:03:31,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345965837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:31,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446668429] [2022-11-18 20:03:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:31,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:31,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:31,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:03:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:31,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:03:31,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:03:32,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446668429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:32,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2022-11-18 20:03:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763428808] [2022-11-18 20:03:32,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:03:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:03:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:03:32,303 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-18 20:03:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:32,783 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2022-11-18 20:03:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:03:32,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) Word has length 51 [2022-11-18 20:03:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:32,787 INFO L225 Difference]: With dead ends: 255 [2022-11-18 20:03:32,787 INFO L226 Difference]: Without dead ends: 155 [2022-11-18 20:03:32,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:03:32,789 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:32,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 192 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-18 20:03:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2022-11-18 20:03:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2022-11-18 20:03:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2022-11-18 20:03:32,811 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2022-11-18 20:03:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:32,811 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2022-11-18 20:03:32,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-18 20:03:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2022-11-18 20:03:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:03:32,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:32,815 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:32,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:33,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:33,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1851863125, now seen corresponding path program 1 times [2022-11-18 20:03:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:33,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508287051] [2022-11-18 20:03:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:03:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-18 20:03:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508287051] [2022-11-18 20:03:33,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508287051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651230304] [2022-11-18 20:03:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:33,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:33,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:03:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:33,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:03:33,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 20:03:34,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651230304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:34,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:34,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2022-11-18 20:03:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384521321] [2022-11-18 20:03:34,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:34,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:03:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:03:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:03:34,030 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2022-11-18 20:03:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:34,468 INFO L93 Difference]: Finished difference Result 241 states and 471 transitions. [2022-11-18 20:03:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:03:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) Word has length 79 [2022-11-18 20:03:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:34,471 INFO L225 Difference]: With dead ends: 241 [2022-11-18 20:03:34,471 INFO L226 Difference]: Without dead ends: 120 [2022-11-18 20:03:34,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:03:34,473 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:34,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 156 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-18 20:03:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2022-11-18 20:03:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 67 states have internal predecessors, (80), 19 states have call successors, (19), 10 states have call predecessors, (19), 12 states have return successors, (52), 20 states have call predecessors, (52), 19 states have call successors, (52) [2022-11-18 20:03:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 151 transitions. [2022-11-18 20:03:34,500 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 151 transitions. Word has length 79 [2022-11-18 20:03:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:34,501 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 151 transitions. [2022-11-18 20:03:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2022-11-18 20:03:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 151 transitions. [2022-11-18 20:03:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 20:03:34,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:34,505 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:34,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:03:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:34,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1761405513, now seen corresponding path program 1 times [2022-11-18 20:03:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:34,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569468228] [2022-11-18 20:03:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:03:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-18 20:03:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569468228] [2022-11-18 20:03:35,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569468228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447044755] [2022-11-18 20:03:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:35,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:35,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:03:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:03:35,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 131 proven. 51 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 20:03:35,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 131 proven. 59 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-18 20:03:36,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447044755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:36,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:36,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 29 [2022-11-18 20:03:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153248546] [2022-11-18 20:03:36,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:36,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:03:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:36,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:03:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:03:36,741 INFO L87 Difference]: Start difference. First operand 98 states and 151 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 20:03:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:37,536 INFO L93 Difference]: Finished difference Result 235 states and 425 transitions. [2022-11-18 20:03:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:03:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) Word has length 133 [2022-11-18 20:03:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:37,539 INFO L225 Difference]: With dead ends: 235 [2022-11-18 20:03:37,539 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:03:37,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=1512, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:03:37,542 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 110 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:37,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 310 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:03:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:03:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2022-11-18 20:03:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 73 states have internal predecessors, (85), 19 states have call successors, (19), 11 states have call predecessors, (19), 15 states have return successors, (53), 24 states have call predecessors, (53), 19 states have call successors, (53) [2022-11-18 20:03:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2022-11-18 20:03:37,555 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 133 [2022-11-18 20:03:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:37,556 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2022-11-18 20:03:37,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 18 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 20:03:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2022-11-18 20:03:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:03:37,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:37,558 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:37,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:03:37,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 882144864, now seen corresponding path program 2 times [2022-11-18 20:03:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:37,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489809320] [2022-11-18 20:03:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:03:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:03:38,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:38,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489809320] [2022-11-18 20:03:38,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489809320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:38,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851549532] [2022-11-18 20:03:38,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:38,112 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:38,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:03:38,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:38,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:38,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:38,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 20:03:38,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 20:03:38,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851549532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:38,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:38,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2022-11-18 20:03:38,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964418951] [2022-11-18 20:03:38,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:38,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:03:38,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:03:38,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:03:38,698 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-18 20:03:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:38,968 INFO L93 Difference]: Finished difference Result 222 states and 336 transitions. [2022-11-18 20:03:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:03:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) Word has length 92 [2022-11-18 20:03:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:38,971 INFO L225 Difference]: With dead ends: 222 [2022-11-18 20:03:38,971 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 20:03:38,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 199 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:03:38,973 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:38,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 159 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 20:03:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2022-11-18 20:03:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 80 states have (on average 1.1375) internal successors, (91), 78 states have internal predecessors, (91), 20 states have call successors, (20), 12 states have call predecessors, (20), 16 states have return successors, (54), 26 states have call predecessors, (54), 20 states have call successors, (54) [2022-11-18 20:03:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2022-11-18 20:03:38,985 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 92 [2022-11-18 20:03:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:38,985 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2022-11-18 20:03:38,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-18 20:03:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2022-11-18 20:03:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 20:03:38,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:38,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:38,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:39,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:03:39,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1154581566, now seen corresponding path program 3 times [2022-11-18 20:03:39,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:39,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019455304] [2022-11-18 20:03:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:39,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:03:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 108 proven. 97 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-18 20:03:39,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:39,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019455304] [2022-11-18 20:03:39,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019455304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:39,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370770907] [2022-11-18 20:03:39,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:03:39,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:39,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:39,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:39,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:03:39,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:03:39,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:39,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:03:39,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 141 proven. 21 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:03:40,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 141 proven. 21 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:03:40,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370770907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:40,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:40,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 29 [2022-11-18 20:03:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517039539] [2022-11-18 20:03:40,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:40,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:03:40,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:03:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:03:40,673 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 29 states have internal predecessors, (81), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-18 20:03:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:41,369 INFO L93 Difference]: Finished difference Result 258 states and 421 transitions. [2022-11-18 20:03:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:03:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 29 states have internal predecessors, (81), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) Word has length 119 [2022-11-18 20:03:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:41,376 INFO L225 Difference]: With dead ends: 258 [2022-11-18 20:03:41,377 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 20:03:41,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 258 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:03:41,379 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 168 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:41,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 213 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 20:03:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 128. [2022-11-18 20:03:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 86 states have internal predecessors, (104), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (54), 24 states have call predecessors, (54), 22 states have call successors, (54) [2022-11-18 20:03:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 180 transitions. [2022-11-18 20:03:41,396 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 180 transitions. Word has length 119 [2022-11-18 20:03:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:41,398 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 180 transitions. [2022-11-18 20:03:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 29 states have internal predecessors, (81), 17 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-18 20:03:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 180 transitions. [2022-11-18 20:03:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:03:41,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:41,400 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:41,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:41,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:03:41,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2118534433, now seen corresponding path program 4 times [2022-11-18 20:03:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:41,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498806912] [2022-11-18 20:03:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:03:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:03:42,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498806912] [2022-11-18 20:03:42,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498806912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169739580] [2022-11-18 20:03:42,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:03:42,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:42,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:42,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:03:42,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:03:42,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:42,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 20:03:42,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:03:43,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:03:44,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169739580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:44,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:44,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2022-11-18 20:03:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651539949] [2022-11-18 20:03:44,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:44,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:03:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:44,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:03:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:03:44,337 INFO L87 Difference]: Start difference. First operand 128 states and 180 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:03:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:44,611 INFO L93 Difference]: Finished difference Result 135 states and 189 transitions. [2022-11-18 20:03:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:03:44,611 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) Word has length 106 [2022-11-18 20:03:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:44,613 INFO L225 Difference]: With dead ends: 135 [2022-11-18 20:03:44,613 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 20:03:44,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 229 SyntacticMatches, 18 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:03:44,615 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:44,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 908 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 20:03:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2022-11-18 20:03:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 86 states have internal predecessors, (104), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (53), 24 states have call predecessors, (53), 22 states have call successors, (53) [2022-11-18 20:03:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 179 transitions. [2022-11-18 20:03:44,627 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 179 transitions. Word has length 106 [2022-11-18 20:03:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:44,627 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 179 transitions. [2022-11-18 20:03:44,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:03:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 179 transitions. [2022-11-18 20:03:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 20:03:44,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:44,634 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:44,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:03:44,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1967848152, now seen corresponding path program 5 times [2022-11-18 20:03:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291714115] [2022-11-18 20:03:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:03:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:03:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:03:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:03:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:03:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:03:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-18 20:03:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:45,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291714115] [2022-11-18 20:03:45,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291714115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:45,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33423536] [2022-11-18 20:03:45,518 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:03:45,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:45,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:03:45,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:03:45,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:45,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:03:45,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 150 proven. 142 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-18 20:03:45,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 152 proven. 146 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-18 20:03:47,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33423536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:47,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:47,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 30 [2022-11-18 20:03:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147947762] [2022-11-18 20:03:47,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:47,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:03:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:03:47,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:03:47,059 INFO L87 Difference]: Start difference. First operand 128 states and 179 transitions. Second operand has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2022-11-18 20:03:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:47,673 INFO L93 Difference]: Finished difference Result 235 states and 349 transitions. [2022-11-18 20:03:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:03:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) Word has length 147 [2022-11-18 20:03:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:47,675 INFO L225 Difference]: With dead ends: 235 [2022-11-18 20:03:47,675 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:03:47,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 314 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:03:47,677 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 72 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:47,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 306 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:03:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:03:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:03:47,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2022-11-18 20:03:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:47,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:03:47,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 22 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (34), 16 states have call predecessors, (34), 22 states have call successors, (34) [2022-11-18 20:03:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:03:47,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:03:47,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:03:47,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:47,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:03:47,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:03:48,934 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:03:48,934 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:03:48,935 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:03:48,935 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:03:48,935 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2022-11-18 20:03:48,935 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= 5 |ULTIMATE.start_main_~x~0#1|) [2022-11-18 20:03:48,936 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-18 20:03:48,936 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-11-18 20:03:48,936 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5)) [2022-11-18 20:03:48,936 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-11-18 20:03:48,936 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-11-18 20:03:48,937 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-11-18 20:03:48,937 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (not (<= |fibo2_#in~n| 1)) (= fibo2_~n |fibo2_#in~n|)) [2022-11-18 20:03:48,937 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-18 20:03:48,937 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (and (<= |fibo2_#t~ret6| 1) (<= 1 |fibo2_#t~ret6|)) (not (<= |fibo2_#in~n| 3))) (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse0 (<= 5 fibo2_~n)) (and .cse0 (<= |fibo2_#t~ret6| 2) (<= 2 |fibo2_#t~ret6|)) (and (<= fibo2_~n 2) .cse0 (< 1 fibo2_~n)) (and (<= 3 fibo2_~n) .cse0 (<= fibo2_~n 3))))) [2022-11-18 20:03:48,937 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-11-18 20:03:48,938 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-18 20:03:48,938 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-11-18 20:03:48,938 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-11-18 20:03:48,938 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-11-18 20:03:48,938 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-11-18 20:03:48,938 INFO L895 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (not (<= |fibo1_#in~n| 1))) [2022-11-18 20:03:48,939 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-11-18 20:03:48,939 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (<= 3 fibo1_~n)) (.cse1 (<= |fibo1_#in~n| 4)) (.cse2 (= fibo1_~n |fibo1_#in~n|))) (and (or (<= fibo1_~n 2) (and (<= 3 |fibo1_#t~ret4|) (<= |fibo1_#t~ret4| 3)) (<= 6 fibo1_~n) (and .cse0 .cse1 .cse2)) (or (and .cse2 (<= 5 fibo1_~n)) (and .cse0 (<= 4 |fibo1_#in~n|) .cse1 .cse2) (and (< 1 fibo1_~n) (<= 1 |fibo1_#t~ret4|) .cse2 (<= |fibo1_#t~ret4| 1))))) [2022-11-18 20:03:48,939 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-11-18 20:03:48,939 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-11-18 20:03:48,939 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-11-18 20:03:48,940 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-11-18 20:03:48,940 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-11-18 20:03:48,943 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:48,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:03:48,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:03:48 BoogieIcfgContainer [2022-11-18 20:03:48,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:03:48,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:03:48,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:03:48,959 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:03:48,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:25" (3/4) ... [2022-11-18 20:03:48,962 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:03:48,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-11-18 20:03:48,968 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-11-18 20:03:48,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 20:03:48,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:03:48,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:03:48,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:03:49,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:03:49,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:03:49,005 INFO L158 Benchmark]: Toolchain (without parser) took 24187.81ms. Allocated memory was 127.9MB in the beginning and 310.4MB in the end (delta: 182.5MB). Free memory was 89.2MB in the beginning and 239.3MB in the end (delta: -150.1MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,005 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:03:49,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.61ms. Allocated memory is still 127.9MB. Free memory was 89.0MB in the beginning and 102.1MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.28ms. Allocated memory is still 127.9MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,006 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 954.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,007 INFO L158 Benchmark]: RCFGBuilder took 348.71ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 89.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,007 INFO L158 Benchmark]: TraceAbstraction took 23457.37ms. Allocated memory was 127.9MB in the beginning and 310.4MB in the end (delta: 182.5MB). Free memory was 88.8MB in the beginning and 241.4MB in the end (delta: -152.6MB). Peak memory consumption was 171.1MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,007 INFO L158 Benchmark]: Witness Printer took 45.66ms. Allocated memory is still 310.4MB. Free memory was 241.4MB in the beginning and 239.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:03:49,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.61ms. Allocated memory is still 127.9MB. Free memory was 89.0MB in the beginning and 102.1MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.28ms. Allocated memory is still 127.9MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 954.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.71ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 89.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 23457.37ms. Allocated memory was 127.9MB in the beginning and 310.4MB in the end (delta: 182.5MB). Free memory was 88.8MB in the beginning and 241.4MB in the end (delta: -152.6MB). Peak memory consumption was 171.1MB. Max. memory is 16.1GB. * Witness Printer took 45.66ms. Allocated memory is still 310.4MB. Free memory was 241.4MB in the beginning and 239.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 41]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.3s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 774 mSDsluCounter, 2904 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2535 mSDsCounter, 781 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4786 IncrementalHoareTripleChecker+Invalid, 5567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 781 mSolverCounterUnsat, 369 mSDtfsCounter, 4786 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2177 GetRequests, 1818 SyntacticMatches, 60 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=11, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 143 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 518 PreInvPairs, 652 NumberOfFragments, 138 HoareAnnotationTreeSize, 518 FomulaSimplifications, 3220 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4419 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 1715 NumberOfCodeBlocks, 1643 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2527 ConstructedInterpolants, 0 QuantifiedInterpolants, 5782 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1950 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 35 InterpolantComputations, 2 PerfectInterpolantSequences, 4703/6024 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 5 <= x RESULT: Ultimate proved your program to be correct! [2022-11-18 20:03:49,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88488c74-8151-4de7-876a-a8f7efbd7e24/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE