./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:07:50,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:07:50,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:07:50,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:07:50,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:07:50,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:07:50,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:07:50,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:07:50,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:07:50,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:07:50,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:07:50,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:07:50,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:07:50,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:07:50,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:07:50,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:07:50,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:07:50,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:07:50,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:07:50,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:07:50,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:07:50,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:07:50,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:07:50,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:07:50,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:07:50,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:07:50,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:07:50,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:07:50,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:07:50,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:07:50,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:07:50,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:07:50,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:07:50,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:07:50,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:07:50,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:07:50,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:07:50,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:07:50,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:07:50,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:07:50,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:07:50,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:07:50,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:07:50,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:07:50,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:07:50,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:07:50,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:07:50,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:07:50,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:07:50,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:07:50,673 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:07:50,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:07:50,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:07:50,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:07:50,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:07:50,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:07:50,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:07:50,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:07:50,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:07:50,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:07:50,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:07:50,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:07:50,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:07:50,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:07:50,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:07:50,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:07:50,678 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:07:50,678 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2022-12-13 19:07:50,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:07:50,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:07:50,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:07:50,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:07:50,906 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:07:50,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-12-13 19:07:53,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:07:53,562 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:07:53,562 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-12-13 19:07:53,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/data/e9c57bb7f/32608964ff6d4878a32bf55d337b155f/FLAGf2b78ee8c [2022-12-13 19:07:53,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/data/e9c57bb7f/32608964ff6d4878a32bf55d337b155f [2022-12-13 19:07:53,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:07:53,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:07:53,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:07:53,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:07:53,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:07:53,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:07:53" (1/1) ... [2022-12-13 19:07:53,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768274aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:53, skipping insertion in model container [2022-12-13 19:07:53,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:07:53" (1/1) ... [2022-12-13 19:07:53,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:07:53,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:07:54,100 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-12-13 19:07:54,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:07:54,110 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:07:54,120 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-12-13 19:07:54,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:07:54,130 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:07:54,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54 WrapperNode [2022-12-13 19:07:54,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:07:54,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:07:54,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:07:54,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:07:54,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,151 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 19:07:54,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:07:54,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:07:54,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:07:54,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:07:54,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:07:54,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:07:54,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:07:54,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:07:54,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (1/1) ... [2022-12-13 19:07:54,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:07:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:54,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:07:54,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:07:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:07:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:07:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 19:07:54,221 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 19:07:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 19:07:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 19:07:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:07:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:07:54,277 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:07:54,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:07:54,362 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:07:54,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:07:54,367 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:07:54,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:54 BoogieIcfgContainer [2022-12-13 19:07:54,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:07:54,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:07:54,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:07:54,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:07:54,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:07:53" (1/3) ... [2022-12-13 19:07:54,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de3747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:07:54, skipping insertion in model container [2022-12-13 19:07:54,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:54" (2/3) ... [2022-12-13 19:07:54,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de3747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:07:54, skipping insertion in model container [2022-12-13 19:07:54,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:54" (3/3) ... [2022-12-13 19:07:54,374 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2022-12-13 19:07:54,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:07:54,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:07:54,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:07:54,425 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;@6dcc4a3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:07:54,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:07:54,428 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) [2022-12-13 19:07:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 19:07:54,434 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:54,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:54,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2022-12-13 19:07:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:54,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512512081] [2022-12-13 19:07:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:54,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:54,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512512081] [2022-12-13 19:07:54,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512512081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:54,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:54,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:07:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049493459] [2022-12-13 19:07:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:54,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:07:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:07:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:07:54,689 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) [2022-12-13 19:07:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:54,759 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-12-13 19:07:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:07:54,761 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 [2022-12-13 19:07:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:54,769 INFO L225 Difference]: With dead ends: 39 [2022-12-13 19:07:54,769 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 19:07:54,772 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 [2022-12-13 19:07:54,775 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 [2022-12-13 19:07:54,776 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] [2022-12-13 19:07:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 19:07:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-13 19:07:54,802 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) [2022-12-13 19:07:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-12-13 19:07:54,803 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2022-12-13 19:07:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:54,804 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-12-13 19:07:54,804 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) [2022-12-13 19:07:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-12-13 19:07:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:07:54,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:54,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:07:54,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:54,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2022-12-13 19:07:54,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:54,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119051932] [2022-12-13 19:07:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119051932] [2022-12-13 19:07:54,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119051932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:54,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:54,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:07:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674227941] [2022-12-13 19:07:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:54,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:07:54,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:07:54,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:07:54,895 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) [2022-12-13 19:07:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:54,931 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-12-13 19:07:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:07:54,931 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 [2022-12-13 19:07:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:54,932 INFO L225 Difference]: With dead ends: 33 [2022-12-13 19:07:54,932 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 19:07:54,932 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 [2022-12-13 19:07:54,933 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:54,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:07:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 19:07:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-12-13 19:07:54,937 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) [2022-12-13 19:07:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-12-13 19:07:54,938 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2022-12-13 19:07:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:54,938 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-12-13 19:07:54,938 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) [2022-12-13 19:07:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-12-13 19:07:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 19:07:54,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:54,939 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] [2022-12-13 19:07:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:07:54,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2022-12-13 19:07:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:54,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561316492] [2022-12-13 19:07:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:07:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:55,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:55,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561316492] [2022-12-13 19:07:55,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561316492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:55,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301570743] [2022-12-13 19:07:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:55,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:55,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:55,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:55,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:07:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:07:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:55,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:55,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301570743] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:55,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:55,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-12-13 19:07:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763775399] [2022-12-13 19:07:55,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:55,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:07:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:07:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:07:55,326 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) [2022-12-13 19:07:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:55,458 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-12-13 19:07:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:07:55,459 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 [2022-12-13 19:07:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:55,460 INFO L225 Difference]: With dead ends: 55 [2022-12-13 19:07:55,460 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 19:07:55,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:07:55,461 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:55,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 107 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:07:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 19:07:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-12-13 19:07:55,466 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) [2022-12-13 19:07:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-12-13 19:07:55,467 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2022-12-13 19:07:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:55,467 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-12-13 19:07:55,468 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) [2022-12-13 19:07:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-12-13 19:07:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 19:07:55,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:55,469 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] [2022-12-13 19:07:55,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:07:55,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:55,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2022-12-13 19:07:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:55,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696711363] [2022-12-13 19:07:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:07:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696711363] [2022-12-13 19:07:55,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696711363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57592696] [2022-12-13 19:07:55,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:55,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:55,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:07:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:55,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:07:55,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:56,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:07:56,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57592696] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:56,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:56,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-12-13 19:07:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101222533] [2022-12-13 19:07:56,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:07:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:07:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:07:56,147 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) [2022-12-13 19:07:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:56,264 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-12-13 19:07:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:07:56,264 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 [2022-12-13 19:07:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:56,267 INFO L225 Difference]: With dead ends: 51 [2022-12-13 19:07:56,267 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 19:07:56,268 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 [2022-12-13 19:07:56,268 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 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 [2022-12-13 19:07:56,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 83 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:07:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 19:07:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-12-13 19:07:56,275 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) [2022-12-13 19:07:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-12-13 19:07:56,276 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2022-12-13 19:07:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:56,276 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-12-13 19:07:56,276 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) [2022-12-13 19:07:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-12-13 19:07:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 19:07:56,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:56,277 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] [2022-12-13 19:07:56,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:07:56,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:56,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2022-12-13 19:07:56,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:56,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245232827] [2022-12-13 19:07:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:07:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:07:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:07:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245232827] [2022-12-13 19:07:56,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245232827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364333752] [2022-12-13 19:07:56,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:56,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:56,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:56,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:56,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:07:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:07:56,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:07:56,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:07:57,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364333752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:57,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:57,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2022-12-13 19:07:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808605785] [2022-12-13 19:07:57,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:57,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:07:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:57,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:07:57,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:07:57,009 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) [2022-12-13 19:07:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:57,180 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2022-12-13 19:07:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:07:57,181 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 [2022-12-13 19:07:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:57,183 INFO L225 Difference]: With dead ends: 105 [2022-12-13 19:07:57,183 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 19:07:57,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:07:57,185 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:57,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 123 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:07:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 19:07:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 19:07:57,196 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) [2022-12-13 19:07:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2022-12-13 19:07:57,197 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2022-12-13 19:07:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:57,198 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2022-12-13 19:07:57,198 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) [2022-12-13 19:07:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2022-12-13 19:07:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 19:07:57,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:57,200 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] [2022-12-13 19:07:57,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:07:57,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:57,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2022-12-13 19:07:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27170198] [2022-12-13 19:07:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:57,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:07:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:07:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 19:07:57,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27170198] [2022-12-13 19:07:57,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27170198] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909397649] [2022-12-13 19:07:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:57,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:57,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:07:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:57,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:07:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:07:57,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:07:57,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909397649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:57,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:57,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2022-12-13 19:07:57,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120971457] [2022-12-13 19:07:57,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:57,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 19:07:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 19:07:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:07:57,844 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) [2022-12-13 19:07:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:58,100 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2022-12-13 19:07:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 19:07:58,101 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 [2022-12-13 19:07:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:58,103 INFO L225 Difference]: With dead ends: 177 [2022-12-13 19:07:58,103 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 19:07:58,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:07:58,105 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 47 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 195 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:07:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 19:07:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-12-13 19:07:58,124 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) [2022-12-13 19:07:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2022-12-13 19:07:58,126 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2022-12-13 19:07:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:58,127 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2022-12-13 19:07:58,127 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) [2022-12-13 19:07:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2022-12-13 19:07:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 19:07:58,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:58,130 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] [2022-12-13 19:07:58,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:07:58,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 19:07:58,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2022-12-13 19:07:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:58,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586759832] [2022-12-13 19:07:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:07:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:07:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:07:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:07:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:58,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586759832] [2022-12-13 19:07:58,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586759832] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:58,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537365045] [2022-12-13 19:07:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:58,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:58,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:07:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:07:58,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:07:58,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:07:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:07:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537365045] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:07:59,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:07:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2022-12-13 19:07:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354582989] [2022-12-13 19:07:59,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:07:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:07:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:07:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:07:59,082 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-12-13 19:07:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:59,326 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2022-12-13 19:07:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:07:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) Word has length 51 [2022-12-13 19:07:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:59,330 INFO L225 Difference]: With dead ends: 255 [2022-12-13 19:07:59,330 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 19:07:59,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:07:59,332 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:59,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 176 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:07:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 19:07:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2022-12-13 19:07:59,353 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) [2022-12-13 19:07:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2022-12-13 19:07:59,355 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2022-12-13 19:07:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:59,355 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2022-12-13 19:07:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-12-13 19:07:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2022-12-13 19:07:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 19:07:59,359 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:59,359 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:59,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:07:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:59,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2022-12-13 19:07:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:59,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458063071] [2022-12-13 19:07:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:07:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:07:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:07:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:07:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:07:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:07:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:07:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:07:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 19:07:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458063071] [2022-12-13 19:07:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458063071] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849397790] [2022-12-13 19:07:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:59,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:59,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:07:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:59,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:07:59,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 19:08:00,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 19:08:00,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849397790] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:00,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:00,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2022-12-13 19:08:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390427667] [2022-12-13 19:08:00,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:08:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:08:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:08:00,600 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2022-12-13 19:08:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:00,910 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2022-12-13 19:08:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 19:08:00,911 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 93 [2022-12-13 19:08:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:00,912 INFO L225 Difference]: With dead ends: 240 [2022-12-13 19:08:00,912 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 19:08:00,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 194 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 19:08:00,915 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:00,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 200 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:08:00,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 19:08:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-12-13 19:08:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 14 states have call successors, (14), 8 states have call predecessors, (14), 12 states have return successors, (35), 17 states have call predecessors, (35), 14 states have call successors, (35) [2022-12-13 19:08:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2022-12-13 19:08:00,927 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93 [2022-12-13 19:08:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:00,927 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2022-12-13 19:08:00,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2022-12-13 19:08:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2022-12-13 19:08:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 19:08:00,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:08:00,930 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:00,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:08:01,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 19:08:01,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:08:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash 401452639, now seen corresponding path program 1 times [2022-12-13 19:08:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:01,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735505804] [2022-12-13 19:08:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:08:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:08:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:08:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:08:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 62 proven. 125 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-12-13 19:08:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:01,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735505804] [2022-12-13 19:08:01,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735505804] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:01,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755497444] [2022-12-13 19:08:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:01,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:01,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:08:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:01,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:08:01,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 49 proven. 114 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-12-13 19:08:01,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 49 proven. 119 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-13 19:08:02,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755497444] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:02,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:02,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2022-12-13 19:08:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88739404] [2022-12-13 19:08:02,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:02,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 19:08:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 19:08:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:08:02,061 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-12-13 19:08:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:02,315 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2022-12-13 19:08:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:08:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) Word has length 135 [2022-12-13 19:08:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:02,316 INFO L225 Difference]: With dead ends: 169 [2022-12-13 19:08:02,316 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 19:08:02,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 296 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:08:02,317 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:02,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 177 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:08:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 19:08:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-12-13 19:08:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (35), 18 states have call predecessors, (35), 14 states have call successors, (35) [2022-12-13 19:08:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2022-12-13 19:08:02,327 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 135 [2022-12-13 19:08:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:02,327 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2022-12-13 19:08:02,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-12-13 19:08:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2022-12-13 19:08:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-12-13 19:08:02,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:08:02,330 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:02,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:08:02,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:02,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:08:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -712391191, now seen corresponding path program 2 times [2022-12-13 19:08:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:02,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758694895] [2022-12-13 19:08:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:02,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:08:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 19:08:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 19:08:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 19:08:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 194 proven. 345 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-12-13 19:08:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:03,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758694895] [2022-12-13 19:08:03,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758694895] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:03,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101624943] [2022-12-13 19:08:03,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:08:03,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:03,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:03,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:03,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:08:03,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:08:03,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:03,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:08:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 97 proven. 261 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2022-12-13 19:08:03,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 101 proven. 265 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2022-12-13 19:08:04,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101624943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:04,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:04,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 33 [2022-12-13 19:08:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450846942] [2022-12-13 19:08:04,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:04,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 19:08:04,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 19:08:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 19:08:04,154 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) [2022-12-13 19:08:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:04,857 INFO L93 Difference]: Finished difference Result 246 states and 448 transitions. [2022-12-13 19:08:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 19:08:04,857 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) Word has length 217 [2022-12-13 19:08:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:04,858 INFO L225 Difference]: With dead ends: 246 [2022-12-13 19:08:04,858 INFO L226 Difference]: Without dead ends: 136 [2022-12-13 19:08:04,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 477 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=2748, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 19:08:04,860 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 118 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:04,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 436 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:08:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-13 19:08:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2022-12-13 19:08:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 81 states have internal predecessors, (91), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (38), 24 states have call predecessors, (38), 23 states have call successors, (38) [2022-12-13 19:08:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 152 transitions. [2022-12-13 19:08:04,867 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 152 transitions. Word has length 217 [2022-12-13 19:08:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:04,867 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 152 transitions. [2022-12-13 19:08:04,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) [2022-12-13 19:08:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 152 transitions. [2022-12-13 19:08:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 19:08:04,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:08:04,869 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:04,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:08:05,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:08:05,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:08:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1414753106, now seen corresponding path program 3 times [2022-12-13 19:08:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:05,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499811496] [2022-12-13 19:08:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:08:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:08:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:08:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 19:08:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 229 proven. 101 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-12-13 19:08:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:05,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499811496] [2022-12-13 19:08:05,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499811496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:05,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141078979] [2022-12-13 19:08:05,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:08:05,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:05,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:08:05,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:08:05,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:05,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:08:05,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 135 proven. 31 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-12-13 19:08:05,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 135 proven. 33 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-12-13 19:08:06,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141078979] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:06,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:06,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 25 [2022-12-13 19:08:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799903558] [2022-12-13 19:08:06,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:06,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 19:08:06,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:06,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 19:08:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-12-13 19:08:06,006 INFO L87 Difference]: Start difference. First operand 120 states and 152 transitions. Second operand has 25 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 25 states have internal predecessors, (73), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 18 states have call predecessors, (26), 14 states have call successors, (26) [2022-12-13 19:08:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:06,251 INFO L93 Difference]: Finished difference Result 220 states and 275 transitions. [2022-12-13 19:08:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 19:08:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 25 states have internal predecessors, (73), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 18 states have call predecessors, (26), 14 states have call successors, (26) Word has length 174 [2022-12-13 19:08:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:06,253 INFO L225 Difference]: With dead ends: 220 [2022-12-13 19:08:06,253 INFO L226 Difference]: Without dead ends: 133 [2022-12-13 19:08:06,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 385 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 19:08:06,255 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 91 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:06,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 229 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:08:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-13 19:08:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2022-12-13 19:08:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 84 states have internal predecessors, (98), 22 states have call successors, (22), 17 states have call predecessors, (22), 14 states have return successors, (30), 23 states have call predecessors, (30), 22 states have call successors, (30) [2022-12-13 19:08:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2022-12-13 19:08:06,264 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 174 [2022-12-13 19:08:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:06,264 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2022-12-13 19:08:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 25 states have internal predecessors, (73), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 18 states have call predecessors, (26), 14 states have call successors, (26) [2022-12-13 19:08:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2022-12-13 19:08:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 19:08:06,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:08:06,267 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:06,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:08:06,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:06,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:08:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:06,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1374317944, now seen corresponding path program 4 times [2022-12-13 19:08:06,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:06,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406257468] [2022-12-13 19:08:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:06,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:08:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:08:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:08:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 19:08:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2022-12-13 19:08:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:06,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406257468] [2022-12-13 19:08:06,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406257468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438050080] [2022-12-13 19:08:06,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:08:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:06,959 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:08:07,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:08:07,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:07,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:08:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 101 proven. 320 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 19:08:07,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 101 proven. 341 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2022-12-13 19:08:08,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438050080] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:08,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:08,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 28 [2022-12-13 19:08:08,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863250188] [2022-12-13 19:08:08,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:08:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:08:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:08:08,318 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (27), 1 states have call predecessors, (27), 12 states have return successors, (36), 14 states have call predecessors, (36), 21 states have call successors, (36) [2022-12-13 19:08:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:08,554 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2022-12-13 19:08:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:08:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (27), 1 states have call predecessors, (27), 12 states have return successors, (36), 14 states have call predecessors, (36), 21 states have call successors, (36) Word has length 201 [2022-12-13 19:08:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:08,556 INFO L225 Difference]: With dead ends: 226 [2022-12-13 19:08:08,556 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 19:08:08,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 438 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 19:08:08,558 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:08,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 258 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:08:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 19:08:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-12-13 19:08:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 71 states have internal predecessors, (83), 16 states have call successors, (16), 15 states have call predecessors, (16), 12 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-13 19:08:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-12-13 19:08:08,562 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 201 [2022-12-13 19:08:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-12-13 19:08:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (27), 1 states have call predecessors, (27), 12 states have return successors, (36), 14 states have call predecessors, (36), 21 states have call successors, (36) [2022-12-13 19:08:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-12-13 19:08:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 19:08:08,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:08:08,565 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:08,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 19:08:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:08,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:08:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 5 times [2022-12-13 19:08:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648731232] [2022-12-13 19:08:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:08:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:08:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 19:08:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:08:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:08:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:08:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:08:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-12-13 19:08:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:10,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648731232] [2022-12-13 19:08:10,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648731232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:10,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767621246] [2022-12-13 19:08:10,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:08:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:10,044 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:10,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:08:10,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 19:08:10,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:08:10,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 19:08:10,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-12-13 19:08:10,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:08:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-12-13 19:08:11,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767621246] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:08:11,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:08:11,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2022-12-13 19:08:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114884726] [2022-12-13 19:08:11,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:08:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 19:08:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 19:08:11,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 19:08:11,611 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2022-12-13 19:08:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:08:11,835 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2022-12-13 19:08:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 19:08:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) Word has length 174 [2022-12-13 19:08:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:08:11,836 INFO L225 Difference]: With dead ends: 104 [2022-12-13 19:08:11,836 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 19:08:11,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 387 SyntacticMatches, 28 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 19:08:11,837 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:08:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1075 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:08:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 19:08:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 19:08:11,838 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) [2022-12-13 19:08:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 19:08:11,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2022-12-13 19:08:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:08:11,838 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:08:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2022-12-13 19:08:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 19:08:11,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 19:08:11,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 19:08:11,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:08:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:08:12,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 19:08:13,059 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 19:08:13,059 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 19:08:13,059 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 37 44) the Hoare annotation is: (<= 6 |ULTIMATE.start_main_~x~0#1|) [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 6 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 6)) [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-12-13 19:08:13,060 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (not (<= |fibo2_#in~n| 1)) (= fibo2_~n |fibo2_#in~n|)) [2022-12-13 19:08:13,060 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse1 (= fibo2_~n |fibo2_#in~n|))) (let ((.cse0 (and (<= 5 fibo2_~n) (<= fibo2_~n 5))) (.cse2 (and (<= |fibo2_#in~n| 4) .cse1 (<= 4 fibo2_~n))) (.cse4 (<= fibo2_~n 3)) (.cse3 (and (<= 6 |fibo2_#in~n|) .cse1))) (and (or .cse0 (and .cse1 (<= |fibo2_#t~ret6| 1) (<= 1 |fibo2_#t~ret6|)) .cse2 .cse3) (or (not (<= |fibo2_#in~n| 5)) (and (<= |fibo2_#t~ret6| 2) (<= 2 |fibo2_#t~ret6|)) .cse0 .cse4) (or .cse2 .cse4 .cse3 (and (<= 3 |fibo2_#t~ret6|) (<= |fibo2_#t~ret6| 3) .cse1)) (< 1 fibo2_~n)))) [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-12-13 19:08:13,061 INFO L895 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (not (<= |fibo1_#in~n| 1))) [2022-12-13 19:08:13,061 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-12-13 19:08:13,062 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (and (or (<= |fibo1_#in~n| 5) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#t~ret4| 5) (<= 5 |fibo1_#t~ret4|))) (or (<= 5 |fibo1_#in~n|) (<= |fibo1_#in~n| 3) (and (<= 2 |fibo1_#t~ret4|) (<= |fibo1_#t~ret4| 2))) (or (<= 4 fibo1_~n) (and (<= 1 |fibo1_#t~ret4|) (<= |fibo1_#t~ret4| 1))) (= fibo1_~n |fibo1_#in~n|) (not (<= |fibo1_#in~n| 1))) [2022-12-13 19:08:13,062 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-12-13 19:08:13,062 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-12-13 19:08:13,062 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-12-13 19:08:13,062 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-12-13 19:08:13,062 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2022-12-13 19:08:13,062 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-12-13 19:08:13,064 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:13,066 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:08:13,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:08:13 BoogieIcfgContainer [2022-12-13 19:08:13,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:08:13,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:08:13,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:08:13,075 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:08:13,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:54" (3/4) ... [2022-12-13 19:08:13,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:08:13,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-12-13 19:08:13,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-12-13 19:08:13,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-13 19:08:13,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 19:08:13,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:08:13,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 19:08:13,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:08:13,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:08:13,103 INFO L158 Benchmark]: Toolchain (without parser) took 19127.88ms. Allocated memory was 134.2MB in the beginning and 234.9MB in the end (delta: 100.7MB). Free memory was 100.3MB in the beginning and 156.7MB in the end (delta: -56.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,103 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:08:13,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.29ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 90.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,104 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.50ms. Allocated memory is still 134.2MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:08:13,104 INFO L158 Benchmark]: Boogie Preprocessor took 13.52ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 87.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,104 INFO L158 Benchmark]: RCFGBuilder took 202.79ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 77.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,104 INFO L158 Benchmark]: TraceAbstraction took 18704.01ms. Allocated memory was 134.2MB in the beginning and 234.9MB in the end (delta: 100.7MB). Free memory was 76.8MB in the beginning and 158.8MB in the end (delta: -82.0MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,104 INFO L158 Benchmark]: Witness Printer took 28.25ms. Allocated memory is still 234.9MB. Free memory was 158.8MB in the beginning and 156.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:08:13,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.29ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 90.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.50ms. Allocated memory is still 134.2MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.52ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 87.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 202.79ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 77.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18704.01ms. Allocated memory was 134.2MB in the beginning and 234.9MB in the end (delta: 100.7MB). Free memory was 76.8MB in the beginning and 158.8MB in the end (delta: -82.0MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. * Witness Printer took 28.25ms. Allocated memory is still 234.9MB. Free memory was 158.8MB in the beginning and 156.7MB 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: 18.7s, OverallIterations: 13, TraceHistogramMax: 17, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 709 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 3211 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2820 mSDsCounter, 794 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5223 IncrementalHoareTripleChecker+Invalid, 6017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 794 mSolverCounterUnsat, 391 mSDtfsCounter, 5223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2931 GetRequests, 2537 SyntacticMatches, 71 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=11, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 119 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 482 PreInvPairs, 677 NumberOfFragments, 167 HoareAnnotationTreeSize, 482 FomulaSimplifications, 3994 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5266 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 2351 NumberOfCodeBlocks, 2198 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 3481 ConstructedInterpolants, 0 QuantifiedInterpolants, 7496 SizeOfPredicates, 39 NumberOfNonLiveVariables, 2453 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 35 InterpolantComputations, 2 PerfectInterpolantSequences, 10617/14052 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: 6 <= x RESULT: Ultimate proved your program to be correct! [2022-12-13 19:08:13,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e39a5180-cfb1-4db5-bd53-358b22dc2e0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE