./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a --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 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 --- 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-b5237d8 [2022-11-21 17:10:44,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:10:44,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:10:44,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:10:44,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:10:44,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:10:44,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:10:44,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:10:44,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:10:44,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:10:44,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:10:44,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:10:44,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:10:44,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:10:44,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:10:44,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:10:44,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:10:44,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:10:44,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:10:44,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:10:44,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:10:44,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:10:44,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:10:44,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:10:44,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:10:44,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:10:44,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:10:44,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:10:44,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:10:44,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:10:44,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:10:44,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:10:44,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:10:44,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:10:44,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:10:44,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:10:44,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:10:44,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:10:44,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:10:44,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:10:44,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:10:44,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:10:45,021 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:10:45,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:10:45,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:10:45,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:10:45,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:10:45,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:10:45,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:10:45,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:10:45,027 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:10:45,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:10:45,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:10:45,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:10:45,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:10:45,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:10:45,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:10:45,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:10:45,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:10:45,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:10:45,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:10:45,030 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:10:45,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:10:45,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:10:45,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:10:45,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:10:45,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:45,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:10:45,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:10:45,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:10:45,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:10:45,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:10:45,033 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:10:45,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:10:45,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:10:45,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 [2022-11-21 17:10:45,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:10:45,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:10:45,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:10:45,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:10:45,334 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:10:45,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2022-11-21 17:10:48,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:10:48,601 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:10:48,602 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2022-11-21 17:10:48,628 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/data/01aef37dd/f86a1f36784f483c8b997625547135c3/FLAG1e27d317e [2022-11-21 17:10:48,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/data/01aef37dd/f86a1f36784f483c8b997625547135c3 [2022-11-21 17:10:48,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:10:48,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:10:48,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:48,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:10:48,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:10:48,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:48" (1/1) ... [2022-11-21 17:10:48,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22734c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:48, skipping insertion in model container [2022-11-21 17:10:48,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:48" (1/1) ... [2022-11-21 17:10:48,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:10:48,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:10:48,973 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_d06f123e-12dd-4704-8115-c737c794c2df/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2022-11-21 17:10:49,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:49,237 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:10:49,304 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_d06f123e-12dd-4704-8115-c737c794c2df/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2022-11-21 17:10:49,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:49,480 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:10:49,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49 WrapperNode [2022-11-21 17:10:49,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:49,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:49,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:10:49,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:10:49,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,604 INFO L138 Inliner]: procedures = 99, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 934 [2022-11-21 17:10:49,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:49,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:10:49,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:10:49,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:10:49,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:10:49,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:10:49,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:10:49,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:10:49,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (1/1) ... [2022-11-21 17:10:49,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:49,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:10:49,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-21 17:10:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-21 17:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-21 17:10:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-21 17:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-21 17:10:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-21 17:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-21 17:10:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-21 17:10:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 17:10:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 17:10:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-21 17:10:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-21 17:10:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-21 17:10:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-21 17:10:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-21 17:10:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-21 17:10:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-21 17:10:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-21 17:10:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-21 17:10:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-21 17:10:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-21 17:10:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-21 17:10:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:10:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-21 17:10:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-21 17:10:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-21 17:10:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-21 17:10:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-21 17:10:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-21 17:10:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-21 17:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-21 17:10:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 17:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 17:10:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-21 17:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-21 17:10:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 17:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 17:10:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-21 17:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-21 17:10:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-21 17:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-21 17:10:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-21 17:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-21 17:10:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-21 17:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-21 17:10:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-21 17:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-21 17:10:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-21 17:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-21 17:10:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-21 17:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-21 17:10:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:10:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-21 17:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-21 17:10:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:10:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:10:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-21 17:10:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-21 17:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-21 17:10:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-21 17:10:50,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:10:50,007 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:10:51,278 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:10:51,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:10:51,296 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:10:51,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:51 BoogieIcfgContainer [2022-11-21 17:10:51,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:10:51,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:10:51,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:10:51,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:10:51,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:10:48" (1/3) ... [2022-11-21 17:10:51,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:51, skipping insertion in model container [2022-11-21 17:10:51,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:49" (2/3) ... [2022-11-21 17:10:51,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:51, skipping insertion in model container [2022-11-21 17:10:51,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:51" (3/3) ... [2022-11-21 17:10:51,307 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2022-11-21 17:10:51,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:10:51,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:10:51,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:10:51,398 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;@109c7d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:10:51,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:10:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 467 states have (on average 1.676659528907923) internal successors, (783), 490 states have internal predecessors, (783), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 96 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 17:10:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 17:10:51,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:51,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:51,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -91382860, now seen corresponding path program 1 times [2022-11-21 17:10:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:51,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707419230] [2022-11-21 17:10:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:10:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:10:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:10:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:10:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:52,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:52,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707419230] [2022-11-21 17:10:52,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707419230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:52,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:52,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:10:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960195602] [2022-11-21 17:10:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:52,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:10:52,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:10:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:10:52,626 INFO L87 Difference]: Start difference. First operand has 600 states, 467 states have (on average 1.676659528907923) internal successors, (783), 490 states have internal predecessors, (783), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 96 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:10:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:59,973 INFO L93 Difference]: Finished difference Result 1334 states and 2232 transitions. [2022-11-21 17:10:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:10:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-21 17:10:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:00,005 INFO L225 Difference]: With dead ends: 1334 [2022-11-21 17:11:00,006 INFO L226 Difference]: Without dead ends: 746 [2022-11-21 17:11:00,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:00,020 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 738 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:00,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1181 Invalid, 3090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-21 17:11:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-21 17:11:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2022-11-21 17:11:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.6724511930585684) internal successors, (771), 482 states have internal predecessors, (771), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-21 17:11:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2022-11-21 17:11:00,239 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 62 [2022-11-21 17:11:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2022-11-21 17:11:00,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2022-11-21 17:11:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:11:00,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:00,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:00,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:11:00,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash -19769421, now seen corresponding path program 1 times [2022-11-21 17:11:00,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:00,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049433499] [2022-11-21 17:11:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:00,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 17:11:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:00,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049433499] [2022-11-21 17:11:00,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049433499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:00,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:00,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:11:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335082088] [2022-11-21 17:11:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:00,862 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:07,720 INFO L93 Difference]: Finished difference Result 1320 states and 2198 transitions. [2022-11-21 17:11:07,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:07,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-21 17:11:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:07,730 INFO L225 Difference]: With dead ends: 1320 [2022-11-21 17:11:07,730 INFO L226 Difference]: Without dead ends: 746 [2022-11-21 17:11:07,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:07,735 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 734 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:07,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1168 Invalid, 3088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-21 17:11:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-21 17:11:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2022-11-21 17:11:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.6702819956616053) internal successors, (770), 482 states have internal predecessors, (770), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-21 17:11:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 971 transitions. [2022-11-21 17:11:07,902 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 971 transitions. Word has length 65 [2022-11-21 17:11:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:07,902 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 971 transitions. [2022-11-21 17:11:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 971 transitions. [2022-11-21 17:11:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 17:11:07,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:07,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:07,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:11:07,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1811288764, now seen corresponding path program 1 times [2022-11-21 17:11:07,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:07,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404405556] [2022-11-21 17:11:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:07,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 17:11:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404405556] [2022-11-21 17:11:08,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404405556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:08,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:08,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:11:08,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770671225] [2022-11-21 17:11:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:08,410 INFO L87 Difference]: Start difference. First operand 592 states and 971 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:14,555 INFO L93 Difference]: Finished difference Result 1320 states and 2197 transitions. [2022-11-21 17:11:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-11-21 17:11:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:14,566 INFO L225 Difference]: With dead ends: 1320 [2022-11-21 17:11:14,566 INFO L226 Difference]: Without dead ends: 746 [2022-11-21 17:11:14,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:14,570 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1218 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:14,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1160 Invalid, 3061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 17:11:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-21 17:11:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2022-11-21 17:11:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.668112798264642) internal successors, (769), 482 states have internal predecessors, (769), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-21 17:11:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 970 transitions. [2022-11-21 17:11:14,708 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 970 transitions. Word has length 66 [2022-11-21 17:11:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:14,709 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 970 transitions. [2022-11-21 17:11:14,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 970 transitions. [2022-11-21 17:11:14,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 17:11:14,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:14,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:11:14,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1562866511, now seen corresponding path program 1 times [2022-11-21 17:11:14,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:14,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089317223] [2022-11-21 17:11:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:11:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 17:11:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:15,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089317223] [2022-11-21 17:11:15,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089317223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:15,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:15,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:11:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031593521] [2022-11-21 17:11:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:15,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:15,211 INFO L87 Difference]: Start difference. First operand 592 states and 970 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:21,300 INFO L93 Difference]: Finished difference Result 1320 states and 2196 transitions. [2022-11-21 17:11:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:11:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-21 17:11:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:21,307 INFO L225 Difference]: With dead ends: 1320 [2022-11-21 17:11:21,307 INFO L226 Difference]: Without dead ends: 746 [2022-11-21 17:11:21,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:21,312 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1221 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:21,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 1124 Invalid, 3069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [284 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 17:11:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-21 17:11:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2022-11-21 17:11:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.665943600867679) internal successors, (768), 482 states have internal predecessors, (768), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-21 17:11:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 969 transitions. [2022-11-21 17:11:21,461 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 969 transitions. Word has length 67 [2022-11-21 17:11:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:21,461 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 969 transitions. [2022-11-21 17:11:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 969 transitions. [2022-11-21 17:11:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 17:11:21,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:21,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:11:21,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1864177696, now seen corresponding path program 1 times [2022-11-21 17:11:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614961520] [2022-11-21 17:11:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:11:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 17:11:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:22,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:22,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614961520] [2022-11-21 17:11:22,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614961520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:22,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:22,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:11:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748557066] [2022-11-21 17:11:22,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:22,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:11:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:11:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:11:22,070 INFO L87 Difference]: Start difference. First operand 592 states and 969 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:30,171 INFO L93 Difference]: Finished difference Result 1332 states and 2219 transitions. [2022-11-21 17:11:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:11:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-21 17:11:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:30,178 INFO L225 Difference]: With dead ends: 1332 [2022-11-21 17:11:30,178 INFO L226 Difference]: Without dead ends: 758 [2022-11-21 17:11:30,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:11:30,182 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 781 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 5450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:30,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 2068 Invalid, 5579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 5450 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-21 17:11:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-21 17:11:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 596. [2022-11-21 17:11:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 464 states have (on average 1.6594827586206897) internal successors, (770), 485 states have internal predecessors, (770), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-11-21 17:11:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 973 transitions. [2022-11-21 17:11:30,324 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 973 transitions. Word has length 68 [2022-11-21 17:11:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:30,325 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 973 transitions. [2022-11-21 17:11:30,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 973 transitions. [2022-11-21 17:11:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 17:11:30,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:30,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:30,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:11:30,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -815196216, now seen corresponding path program 1 times [2022-11-21 17:11:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:30,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082250923] [2022-11-21 17:11:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:11:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:11:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:11:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082250923] [2022-11-21 17:11:30,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082250923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:30,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:30,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:11:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781691537] [2022-11-21 17:11:30,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:30,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:11:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:11:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:11:30,935 INFO L87 Difference]: Start difference. First operand 596 states and 973 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:11:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:38,436 INFO L93 Difference]: Finished difference Result 1307 states and 2158 transitions. [2022-11-21 17:11:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:11:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-11-21 17:11:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:38,443 INFO L225 Difference]: With dead ends: 1307 [2022-11-21 17:11:38,443 INFO L226 Difference]: Without dead ends: 778 [2022-11-21 17:11:38,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:11:38,448 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1325 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:38,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 2048 Invalid, 5527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-21 17:11:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-11-21 17:11:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 609. [2022-11-21 17:11:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 474 states have (on average 1.6561181434599157) internal successors, (785), 497 states have internal predecessors, (785), 104 states have call successors, (104), 28 states have call predecessors, (104), 30 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2022-11-21 17:11:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 992 transitions. [2022-11-21 17:11:38,618 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 992 transitions. Word has length 75 [2022-11-21 17:11:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:38,619 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 992 transitions. [2022-11-21 17:11:38,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:11:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 992 transitions. [2022-11-21 17:11:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 17:11:38,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:38,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:38,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:11:38,624 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1549151975, now seen corresponding path program 1 times [2022-11-21 17:11:38,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:38,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929805591] [2022-11-21 17:11:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:38,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:11:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:11:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:11:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:39,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929805591] [2022-11-21 17:11:39,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929805591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:39,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:39,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:11:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805517357] [2022-11-21 17:11:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:11:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:11:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:11:39,301 INFO L87 Difference]: Start difference. First operand 609 states and 992 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:11:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:52,622 INFO L93 Difference]: Finished difference Result 1679 states and 2769 transitions. [2022-11-21 17:11:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:11:52,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-11-21 17:11:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:52,648 INFO L225 Difference]: With dead ends: 1679 [2022-11-21 17:11:52,649 INFO L226 Difference]: Without dead ends: 1132 [2022-11-21 17:11:52,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:11:52,653 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2028 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 9893 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 10329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 9893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:52,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 2460 Invalid, 10329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [436 Valid, 9893 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-21 17:11:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-11-21 17:11:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 882. [2022-11-21 17:11:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 687 states have (on average 1.6273653566229986) internal successors, (1118), 710 states have internal predecessors, (1118), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:11:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1419 transitions. [2022-11-21 17:11:52,941 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1419 transitions. Word has length 75 [2022-11-21 17:11:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:52,943 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1419 transitions. [2022-11-21 17:11:52,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:11:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1419 transitions. [2022-11-21 17:11:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 17:11:52,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:52,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:52,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:11:52,948 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1624488240, now seen corresponding path program 1 times [2022-11-21 17:11:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985556061] [2022-11-21 17:11:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:11:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:11:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985556061] [2022-11-21 17:11:53,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985556061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:53,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:53,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:11:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873985431] [2022-11-21 17:11:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:53,398 INFO L87 Difference]: Start difference. First operand 882 states and 1419 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:59,196 INFO L93 Difference]: Finished difference Result 1899 states and 3095 transitions. [2022-11-21 17:11:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-21 17:11:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:59,204 INFO L225 Difference]: With dead ends: 1899 [2022-11-21 17:11:59,204 INFO L226 Difference]: Without dead ends: 1079 [2022-11-21 17:11:59,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:11:59,208 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1298 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:59,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 1151 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 17:11:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-11-21 17:11:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 882. [2022-11-21 17:11:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 687 states have (on average 1.6200873362445414) internal successors, (1113), 710 states have internal predecessors, (1113), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:11:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1414 transitions. [2022-11-21 17:11:59,462 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1414 transitions. Word has length 75 [2022-11-21 17:11:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:59,463 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1414 transitions. [2022-11-21 17:11:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:11:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1414 transitions. [2022-11-21 17:11:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 17:11:59,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:59,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:11:59,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash -496703978, now seen corresponding path program 1 times [2022-11-21 17:11:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:59,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984235367] [2022-11-21 17:11:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:11:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:11:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 17:11:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:11:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:11:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:59,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984235367] [2022-11-21 17:11:59,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984235367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:59,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:59,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:11:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877112874] [2022-11-21 17:11:59,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:11:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:11:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:11:59,896 INFO L87 Difference]: Start difference. First operand 882 states and 1414 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:05,799 INFO L93 Difference]: Finished difference Result 1899 states and 3090 transitions. [2022-11-21 17:12:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:12:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-11-21 17:12:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:05,824 INFO L225 Difference]: With dead ends: 1899 [2022-11-21 17:12:05,824 INFO L226 Difference]: Without dead ends: 1079 [2022-11-21 17:12:05,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:05,828 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1303 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:05,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 1140 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 17:12:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-11-21 17:12:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 882. [2022-11-21 17:12:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 687 states have (on average 1.6128093158660843) internal successors, (1108), 710 states have internal predecessors, (1108), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1409 transitions. [2022-11-21 17:12:06,096 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1409 transitions. Word has length 76 [2022-11-21 17:12:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1409 transitions. [2022-11-21 17:12:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1409 transitions. [2022-11-21 17:12:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:12:06,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:06,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:12:06,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1090752245, now seen corresponding path program 1 times [2022-11-21 17:12:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411500140] [2022-11-21 17:12:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 17:12:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411500140] [2022-11-21 17:12:06,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411500140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:06,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:06,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:12:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659401243] [2022-11-21 17:12:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:12:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:12:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:12:06,644 INFO L87 Difference]: Start difference. First operand 882 states and 1409 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:15,006 INFO L93 Difference]: Finished difference Result 1891 states and 3067 transitions. [2022-11-21 17:12:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:15,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-11-21 17:12:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:15,014 INFO L225 Difference]: With dead ends: 1891 [2022-11-21 17:12:15,014 INFO L226 Difference]: Without dead ends: 1086 [2022-11-21 17:12:15,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:15,018 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 811 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 5311 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2068 Invalid, 5435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 5311 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-21 17:12:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-21 17:12:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 882. [2022-11-21 17:12:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 687 states have (on average 1.611353711790393) internal successors, (1107), 710 states have internal predecessors, (1107), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1408 transitions. [2022-11-21 17:12:15,311 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1408 transitions. Word has length 77 [2022-11-21 17:12:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:15,311 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1408 transitions. [2022-11-21 17:12:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1408 transitions. [2022-11-21 17:12:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:12:15,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:15,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:15,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:12:15,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1097830869, now seen corresponding path program 1 times [2022-11-21 17:12:15,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:15,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169319018] [2022-11-21 17:12:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:15,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 17:12:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:15,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169319018] [2022-11-21 17:12:15,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169319018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:15,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:15,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:12:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260560715] [2022-11-21 17:12:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:12:15,765 INFO L87 Difference]: Start difference. First operand 882 states and 1408 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:21,617 INFO L93 Difference]: Finished difference Result 1899 states and 3082 transitions. [2022-11-21 17:12:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:12:21,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-21 17:12:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:21,629 INFO L225 Difference]: With dead ends: 1899 [2022-11-21 17:12:21,629 INFO L226 Difference]: Without dead ends: 1079 [2022-11-21 17:12:21,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:21,634 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1295 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:21,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1141 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 17:12:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-11-21 17:12:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 882. [2022-11-21 17:12:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 687 states have (on average 1.6040756914119358) internal successors, (1102), 710 states have internal predecessors, (1102), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1403 transitions. [2022-11-21 17:12:21,929 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1403 transitions. Word has length 77 [2022-11-21 17:12:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:21,929 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1403 transitions. [2022-11-21 17:12:21,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1403 transitions. [2022-11-21 17:12:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 17:12:21,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:21,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:12:21,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash 137014067, now seen corresponding path program 1 times [2022-11-21 17:12:21,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217095550] [2022-11-21 17:12:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 17:12:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:22,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:22,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217095550] [2022-11-21 17:12:22,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217095550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:22,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:22,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:12:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590065595] [2022-11-21 17:12:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:22,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:12:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:12:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:12:22,501 INFO L87 Difference]: Start difference. First operand 882 states and 1403 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:30,366 INFO L93 Difference]: Finished difference Result 1912 states and 3092 transitions. [2022-11-21 17:12:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2022-11-21 17:12:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:30,373 INFO L225 Difference]: With dead ends: 1912 [2022-11-21 17:12:30,373 INFO L226 Difference]: Without dead ends: 1104 [2022-11-21 17:12:30,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:30,378 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1301 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:30,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 2047 Invalid, 5387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [284 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-21 17:12:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-11-21 17:12:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 885. [2022-11-21 17:12:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 690 states have (on average 1.6) internal successors, (1104), 713 states have internal predecessors, (1104), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1405 transitions. [2022-11-21 17:12:30,693 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1405 transitions. Word has length 78 [2022-11-21 17:12:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:30,693 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1405 transitions. [2022-11-21 17:12:30,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1405 transitions. [2022-11-21 17:12:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 17:12:30,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:30,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:30,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:12:30,696 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 539371345, now seen corresponding path program 1 times [2022-11-21 17:12:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:30,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277146904] [2022-11-21 17:12:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 17:12:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:31,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277146904] [2022-11-21 17:12:31,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277146904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:31,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:31,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:12:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381961711] [2022-11-21 17:12:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:12:31,171 INFO L87 Difference]: Start difference. First operand 885 states and 1405 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:37,020 INFO L93 Difference]: Finished difference Result 1908 states and 3083 transitions. [2022-11-21 17:12:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:12:37,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-21 17:12:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:37,025 INFO L225 Difference]: With dead ends: 1908 [2022-11-21 17:12:37,025 INFO L226 Difference]: Without dead ends: 1085 [2022-11-21 17:12:37,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:37,027 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1289 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:37,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 1141 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 17:12:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-21 17:12:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 885. [2022-11-21 17:12:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 690 states have (on average 1.5927536231884059) internal successors, (1099), 713 states have internal predecessors, (1099), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1400 transitions. [2022-11-21 17:12:37,277 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1400 transitions. Word has length 78 [2022-11-21 17:12:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:37,277 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1400 transitions. [2022-11-21 17:12:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1400 transitions. [2022-11-21 17:12:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 17:12:37,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:37,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:12:37,280 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 96001894, now seen corresponding path program 1 times [2022-11-21 17:12:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:37,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140784977] [2022-11-21 17:12:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 17:12:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:37,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140784977] [2022-11-21 17:12:37,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140784977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:37,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:37,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:12:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561571550] [2022-11-21 17:12:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:12:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:12:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:12:37,818 INFO L87 Difference]: Start difference. First operand 885 states and 1400 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:45,734 INFO L93 Difference]: Finished difference Result 1918 states and 3089 transitions. [2022-11-21 17:12:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-11-21 17:12:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:45,739 INFO L225 Difference]: With dead ends: 1918 [2022-11-21 17:12:45,740 INFO L226 Difference]: Without dead ends: 1110 [2022-11-21 17:12:45,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:45,742 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1292 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 5072 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 5357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:45,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 2048 Invalid, 5357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 5072 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-21 17:12:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-21 17:12:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 889. [2022-11-21 17:12:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 694 states have (on average 1.5878962536023056) internal successors, (1102), 717 states have internal predecessors, (1102), 148 states have call successors, (148), 43 states have call predecessors, (148), 46 states have return successors, (153), 142 states have call predecessors, (153), 143 states have call successors, (153) [2022-11-21 17:12:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1403 transitions. [2022-11-21 17:12:45,949 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1403 transitions. Word has length 79 [2022-11-21 17:12:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1403 transitions. [2022-11-21 17:12:45,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:12:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1403 transitions. [2022-11-21 17:12:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 17:12:45,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:45,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:12:45,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1449668218, now seen corresponding path program 1 times [2022-11-21 17:12:45,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:45,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983089035] [2022-11-21 17:12:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 17:12:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:46,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983089035] [2022-11-21 17:12:46,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983089035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:46,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:46,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:12:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501687234] [2022-11-21 17:12:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:12:46,384 INFO L87 Difference]: Start difference. First operand 889 states and 1403 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:52,374 INFO L93 Difference]: Finished difference Result 1956 states and 3128 transitions. [2022-11-21 17:12:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:12:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-11-21 17:12:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:52,378 INFO L225 Difference]: With dead ends: 1956 [2022-11-21 17:12:52,378 INFO L226 Difference]: Without dead ends: 1065 [2022-11-21 17:12:52,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:52,381 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1203 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:52,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1138 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 17:12:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-21 17:12:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 870. [2022-11-21 17:12:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 678 states have (on average 1.592920353982301) internal successors, (1080), 699 states have internal predecessors, (1080), 147 states have call successors, (147), 43 states have call predecessors, (147), 44 states have return successors, (150), 141 states have call predecessors, (150), 142 states have call successors, (150) [2022-11-21 17:12:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1377 transitions. [2022-11-21 17:12:52,710 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1377 transitions. Word has length 79 [2022-11-21 17:12:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:52,710 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1377 transitions. [2022-11-21 17:12:52,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:12:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1377 transitions. [2022-11-21 17:12:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 17:12:52,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:52,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:52,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:12:52,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -622437650, now seen corresponding path program 1 times [2022-11-21 17:12:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:52,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549199507] [2022-11-21 17:12:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:12:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 17:12:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:12:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:12:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:53,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549199507] [2022-11-21 17:12:53,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549199507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:53,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:53,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:12:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524128707] [2022-11-21 17:12:53,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:53,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:12:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:53,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:12:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:12:53,232 INFO L87 Difference]: Start difference. First operand 870 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:13:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:01,484 INFO L93 Difference]: Finished difference Result 1891 states and 3043 transitions. [2022-11-21 17:13:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:13:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2022-11-21 17:13:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:01,490 INFO L225 Difference]: With dead ends: 1891 [2022-11-21 17:13:01,490 INFO L226 Difference]: Without dead ends: 1086 [2022-11-21 17:13:01,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:13:01,494 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 774 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 5142 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 5142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:01,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2041 Invalid, 5267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 5142 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-21 17:13:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-21 17:13:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 875. [2022-11-21 17:13:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 683 states have (on average 1.588579795021962) internal successors, (1085), 704 states have internal predecessors, (1085), 147 states have call successors, (147), 43 states have call predecessors, (147), 44 states have return successors, (150), 141 states have call predecessors, (150), 142 states have call successors, (150) [2022-11-21 17:13:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1382 transitions. [2022-11-21 17:13:01,763 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1382 transitions. Word has length 80 [2022-11-21 17:13:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:01,763 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1382 transitions. [2022-11-21 17:13:01,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 17:13:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1382 transitions. [2022-11-21 17:13:01,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 17:13:01,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:01,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:01,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:13:01,765 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:01,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1679645389, now seen corresponding path program 1 times [2022-11-21 17:13:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:01,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567840184] [2022-11-21 17:13:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:13:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:13:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:02,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:02,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567840184] [2022-11-21 17:13:02,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567840184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:02,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:13:02,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:13:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236176714] [2022-11-21 17:13:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:02,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:13:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:13:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:13:02,216 INFO L87 Difference]: Start difference. First operand 875 states and 1382 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:13:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:08,750 INFO L93 Difference]: Finished difference Result 1889 states and 3038 transitions. [2022-11-21 17:13:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:13:08,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-11-21 17:13:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:08,756 INFO L225 Difference]: With dead ends: 1889 [2022-11-21 17:13:08,756 INFO L226 Difference]: Without dead ends: 1063 [2022-11-21 17:13:08,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:13:08,759 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 768 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:08,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1142 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-21 17:13:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-21 17:13:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 875. [2022-11-21 17:13:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 683 states have (on average 1.582723279648609) internal successors, (1081), 704 states have internal predecessors, (1081), 147 states have call successors, (147), 43 states have call predecessors, (147), 44 states have return successors, (150), 141 states have call predecessors, (150), 142 states have call successors, (150) [2022-11-21 17:13:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1378 transitions. [2022-11-21 17:13:09,012 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1378 transitions. Word has length 81 [2022-11-21 17:13:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1378 transitions. [2022-11-21 17:13:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 17:13:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1378 transitions. [2022-11-21 17:13:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 17:13:09,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:09,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:13:09,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 348940721, now seen corresponding path program 1 times [2022-11-21 17:13:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:09,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934945042] [2022-11-21 17:13:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:13:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:13:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934945042] [2022-11-21 17:13:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934945042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:09,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:13:09,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:13:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179503597] [2022-11-21 17:13:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:13:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:13:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:13:09,737 INFO L87 Difference]: Start difference. First operand 875 states and 1378 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 17:13:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:22,970 INFO L93 Difference]: Finished difference Result 3009 states and 4940 transitions. [2022-11-21 17:13:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:13:22,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2022-11-21 17:13:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:22,987 INFO L225 Difference]: With dead ends: 3009 [2022-11-21 17:13:22,987 INFO L226 Difference]: Without dead ends: 2213 [2022-11-21 17:13:22,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:13:22,992 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 4476 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 1298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:22,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 1663 Invalid, 6206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1298 Valid, 4908 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-21 17:13:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-21 17:13:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1680. [2022-11-21 17:13:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1312 states have (on average 1.6044207317073171) internal successors, (2105), 1342 states have internal predecessors, (2105), 281 states have call successors, (281), 80 states have call predecessors, (281), 86 states have return successors, (301), 270 states have call predecessors, (301), 276 states have call successors, (301) [2022-11-21 17:13:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2687 transitions. [2022-11-21 17:13:23,536 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2687 transitions. Word has length 81 [2022-11-21 17:13:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:23,536 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2687 transitions. [2022-11-21 17:13:23,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 17:13:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2687 transitions. [2022-11-21 17:13:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 17:13:23,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:23,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:23,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:13:23,542 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2072703970, now seen corresponding path program 1 times [2022-11-21 17:13:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:23,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496870855] [2022-11-21 17:13:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:13:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:13:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:13:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:13:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 17:13:24,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496870855] [2022-11-21 17:13:24,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496870855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:24,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:13:24,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:13:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310443841] [2022-11-21 17:13:24,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:24,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:13:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:24,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:13:24,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:13:24,361 INFO L87 Difference]: Start difference. First operand 1680 states and 2687 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 17:13:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:38,669 INFO L93 Difference]: Finished difference Result 5802 states and 9699 transitions. [2022-11-21 17:13:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:13:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2022-11-21 17:13:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:38,688 INFO L225 Difference]: With dead ends: 5802 [2022-11-21 17:13:38,688 INFO L226 Difference]: Without dead ends: 4201 [2022-11-21 17:13:38,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:13:38,697 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 3671 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 3321 mSolverCounterSat, 1758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1758 IncrementalHoareTripleChecker+Valid, 3321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:38,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 1544 Invalid, 5079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1758 Valid, 3321 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-21 17:13:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2022-11-21 17:13:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3330. [2022-11-21 17:13:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 2605 states have (on average 1.614971209213052) internal successors, (4207), 2653 states have internal predecessors, (4207), 548 states have call successors, (548), 151 states have call predecessors, (548), 176 states have return successors, (650), 547 states have call predecessors, (650), 543 states have call successors, (650) [2022-11-21 17:13:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5405 transitions. [2022-11-21 17:13:39,892 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5405 transitions. Word has length 136 [2022-11-21 17:13:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:39,893 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 5405 transitions. [2022-11-21 17:13:39,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 17:13:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5405 transitions. [2022-11-21 17:13:39,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 17:13:39,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:39,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:39,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:13:39,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:39,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1678337184, now seen corresponding path program 1 times [2022-11-21 17:13:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:39,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743982986] [2022-11-21 17:13:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:39,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:13:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:13:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:13:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:13:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:13:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:40,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743982986] [2022-11-21 17:13:40,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743982986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:40,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6791649] [2022-11-21 17:13:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:40,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:40,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:40,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:40,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:13:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:41,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:13:41,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 17:13:41,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:13:41,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6791649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:41,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:13:41,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 17:13:41,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617221304] [2022-11-21 17:13:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:41,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:13:41,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:13:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:41,332 INFO L87 Difference]: Start difference. First operand 3330 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:13:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:43,143 INFO L93 Difference]: Finished difference Result 8379 states and 13752 transitions. [2022-11-21 17:13:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:13:43,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2022-11-21 17:13:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:43,164 INFO L225 Difference]: With dead ends: 8379 [2022-11-21 17:13:43,164 INFO L226 Difference]: Without dead ends: 5127 [2022-11-21 17:13:43,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:43,177 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 913 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1961 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:13:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2022-11-21 17:13:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5125. [2022-11-21 17:13:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 3995 states have (on average 1.613767209011264) internal successors, (6447), 4072 states have internal predecessors, (6447), 856 states have call successors, (856), 231 states have call predecessors, (856), 273 states have return successors, (1066), 865 states have call predecessors, (1066), 851 states have call successors, (1066) [2022-11-21 17:13:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 8369 transitions. [2022-11-21 17:13:44,782 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 8369 transitions. Word has length 136 [2022-11-21 17:13:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:44,782 INFO L495 AbstractCegarLoop]: Abstraction has 5125 states and 8369 transitions. [2022-11-21 17:13:44,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:13:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 8369 transitions. [2022-11-21 17:13:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 17:13:44,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:44,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:44,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:44,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:44,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 488556792, now seen corresponding path program 1 times [2022-11-21 17:13:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:44,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145280372] [2022-11-21 17:13:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:44,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:13:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:13:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:13:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:13:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:13:45,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145280372] [2022-11-21 17:13:45,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145280372] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680005684] [2022-11-21 17:13:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:45,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:45,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:45,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:46,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:13:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:46,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:13:46,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 17:13:46,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:13:46,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680005684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:46,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:13:46,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 17:13:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715742927] [2022-11-21 17:13:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:13:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:46,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:13:46,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:46,523 INFO L87 Difference]: Start difference. First operand 5125 states and 8369 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:13:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:49,282 INFO L93 Difference]: Finished difference Result 13766 states and 22793 transitions. [2022-11-21 17:13:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:13:49,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2022-11-21 17:13:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:49,325 INFO L225 Difference]: With dead ends: 13766 [2022-11-21 17:13:49,325 INFO L226 Difference]: Without dead ends: 8719 [2022-11-21 17:13:49,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:49,344 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 912 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:49,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1922 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:13:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2022-11-21 17:13:51,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 8716. [2022-11-21 17:13:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8716 states, 6776 states have (on average 1.612603305785124) internal successors, (10927), 6911 states have internal predecessors, (10927), 1472 states have call successors, (1472), 391 states have call predecessors, (1472), 467 states have return successors, (1982), 1501 states have call predecessors, (1982), 1467 states have call successors, (1982) [2022-11-21 17:13:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 14381 transitions. [2022-11-21 17:13:51,957 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 14381 transitions. Word has length 137 [2022-11-21 17:13:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:51,958 INFO L495 AbstractCegarLoop]: Abstraction has 8716 states and 14381 transitions. [2022-11-21 17:13:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:13:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 14381 transitions. [2022-11-21 17:13:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 17:13:51,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:51,965 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:51,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:52,174 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:52,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2034893086, now seen corresponding path program 1 times [2022-11-21 17:13:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:52,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473119218] [2022-11-21 17:13:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:13:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:13:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:13:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:13:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:13:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:13:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473119218] [2022-11-21 17:13:53,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473119218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613746198] [2022-11-21 17:13:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:53,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:53,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:53,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:53,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:13:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:53,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:13:53,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 17:13:53,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:13:53,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613746198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:53,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:13:53,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 17:13:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578030428] [2022-11-21 17:13:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:53,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:13:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:13:53,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:53,549 INFO L87 Difference]: Start difference. First operand 8716 states and 14381 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:13:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:59,086 INFO L93 Difference]: Finished difference Result 24541 states and 41278 transitions. [2022-11-21 17:13:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:13:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2022-11-21 17:13:59,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:59,164 INFO L225 Difference]: With dead ends: 24541 [2022-11-21 17:13:59,164 INFO L226 Difference]: Without dead ends: 15903 [2022-11-21 17:13:59,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:59,211 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 911 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:59,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1921 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:13:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15903 states. [2022-11-21 17:14:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15903 to 15899. [2022-11-21 17:14:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15899 states, 12339 states have (on average 1.6110705891887511) internal successors, (19879), 12590 states have internal predecessors, (19879), 2704 states have call successors, (2704), 711 states have call predecessors, (2704), 855 states have return successors, (4078), 2773 states have call predecessors, (4078), 2699 states have call successors, (4078) [2022-11-21 17:14:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15899 states to 15899 states and 26661 transitions. [2022-11-21 17:14:04,778 INFO L78 Accepts]: Start accepts. Automaton has 15899 states and 26661 transitions. Word has length 138 [2022-11-21 17:14:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:14:04,778 INFO L495 AbstractCegarLoop]: Abstraction has 15899 states and 26661 transitions. [2022-11-21 17:14:04,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:14:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15899 states and 26661 transitions. [2022-11-21 17:14:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 17:14:04,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:14:04,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:14:04,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:14:04,997 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:14:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1342543226, now seen corresponding path program 1 times [2022-11-21 17:14:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:04,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707560275] [2022-11-21 17:14:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:14:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:14:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:14:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:14:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:14:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:14:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:14:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:14:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:14:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:14:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:14:06,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:06,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707560275] [2022-11-21 17:14:06,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707560275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:14:06,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321737979] [2022-11-21 17:14:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:06,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:14:06,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:06,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:14:06,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06f123e-12dd-4704-8115-c737c794c2df/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:14:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:06,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:14:06,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 17:14:06,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:14:06,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321737979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:14:06,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:14:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 17:14:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039618669] [2022-11-21 17:14:06,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:14:06,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:14:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:06,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:14:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:14:06,447 INFO L87 Difference]: Start difference. First operand 15899 states and 26661 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:14:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:15,288 INFO L93 Difference]: Finished difference Result 46092 states and 79559 transitions. [2022-11-21 17:14:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:14:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 139 [2022-11-21 17:14:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:14:15,471 INFO L225 Difference]: With dead ends: 46092 [2022-11-21 17:14:15,471 INFO L226 Difference]: Without dead ends: 30271 [2022-11-21 17:14:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:14:15,550 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 910 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:14:15,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1918 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:14:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30271 states.