./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8 --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 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a --- 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-e04fb08 [2022-11-16 12:37:49,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:49,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:49,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:49,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:49,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:49,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:49,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:49,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:49,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:49,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:49,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:49,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:49,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:49,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:49,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:49,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:49,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:49,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:49,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:49,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:49,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:49,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:49,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:49,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:49,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:49,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:49,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:49,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:49,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:49,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:49,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:49,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:49,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:49,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:49,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:49,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:49,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:49,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:49,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:49,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:49,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:37:49,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:49,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:49,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:49,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:49,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:49,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:49,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:49,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:49,470 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:49,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:49,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:49,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:49,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:49,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:49,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:37:49,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:49,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:37:49,473 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:49,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:37:49,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:49,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:37:49,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:49,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:49,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:49,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:49,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:49,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:49,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:37:49,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:37:49,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:37:49,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:37:49,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:37:49,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:37:49,479 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_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a [2022-11-16 12:37:49,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:49,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:49,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:49,799 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:49,800 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:49,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2022-11-16 12:37:49,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/data/e8c6df078/647c990fc73b42d78b674b970a3fc654/FLAG1c37bf065 [2022-11-16 12:37:50,611 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:50,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2022-11-16 12:37:50,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/data/e8c6df078/647c990fc73b42d78b674b970a3fc654/FLAG1c37bf065 [2022-11-16 12:37:50,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/data/e8c6df078/647c990fc73b42d78b674b970a3fc654 [2022-11-16 12:37:50,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:50,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:50,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:50,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:50,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:50,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:50" (1/1) ... [2022-11-16 12:37:50,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfcd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:50, skipping insertion in model container [2022-11-16 12:37:50,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:50" (1/1) ... [2022-11-16 12:37:50,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:50,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:51,349 WARN L229 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_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2022-11-16 12:37:51,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:51,543 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:37:51,643 WARN L229 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_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2022-11-16 12:37:51,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:51,796 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:37:51,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51 WrapperNode [2022-11-16 12:37:51,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:51,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:51,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:37:51,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:37:51,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:51,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:51,947 INFO L138 Inliner]: procedures = 91, calls = 331, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 805 [2022-11-16 12:37:51,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:51,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:37:51,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:37:51,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:37:51,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:51,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:51,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:51,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:37:52,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:37:52,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:37:52,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:37:52,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (1/1) ... [2022-11-16 12:37:52,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:52,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:37:52,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:37:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-16 12:37:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-16 12:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-16 12:37:52,176 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-16 12:37:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-16 12:37:52,177 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-16 12:37:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-16 12:37:52,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-16 12:37:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-16 12:37:52,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-16 12:37:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 12:37:52,182 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 12:37:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 12:37:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 12:37:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-16 12:37:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-16 12:37:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-16 12:37:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-16 12:37:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-16 12:37:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-16 12:37:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-16 12:37:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-16 12:37:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-16 12:37:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-16 12:37:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-16 12:37:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-16 12:37:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-16 12:37:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-16 12:37:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-16 12:37:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-16 12:37:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-16 12:37:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-16 12:37:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-16 12:37:52,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-16 12:37:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:37:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-16 12:37:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-16 12:37:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-16 12:37:52,187 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-16 12:37:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-16 12:37:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-16 12:37:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:37:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:37:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-16 12:37:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-16 12:37:52,359 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:37:52,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:37:53,654 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:37:53,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:37:53,674 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:37:53,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:53 BoogieIcfgContainer [2022-11-16 12:37:53,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:37:53,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:37:53,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:37:53,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:37:53,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:50" (1/3) ... [2022-11-16 12:37:53,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:53, skipping insertion in model container [2022-11-16 12:37:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:51" (2/3) ... [2022-11-16 12:37:53,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:53, skipping insertion in model container [2022-11-16 12:37:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:53" (3/3) ... [2022-11-16 12:37:53,689 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2022-11-16 12:37:53,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:37:53,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:37:53,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:37:53,815 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;@2761934c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:37:53,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:37:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-16 12:37:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:37:53,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:53,846 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] [2022-11-16 12:37:53,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash -681820971, now seen corresponding path program 1 times [2022-11-16 12:37:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:53,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210143240] [2022-11-16 12:37:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:37:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:37:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:37:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:37:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:37:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:37:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:37:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:37:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:37:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:55,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:55,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210143240] [2022-11-16 12:37:55,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210143240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:55,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:55,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:37:55,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957375955] [2022-11-16 12:37:55,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:55,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:37:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:37:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:37:55,344 INFO L87 Difference]: Start difference. First operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:38:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:06,691 INFO L93 Difference]: Finished difference Result 1464 states and 2544 transitions. [2022-11-16 12:38:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:38:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-11-16 12:38:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:06,729 INFO L225 Difference]: With dead ends: 1464 [2022-11-16 12:38:06,733 INFO L226 Difference]: Without dead ends: 944 [2022-11-16 12:38:06,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:38:06,752 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1458 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 4868 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 5531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:06,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2535 Invalid, 5531 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [663 Valid, 4868 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-16 12:38:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-16 12:38:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 526. [2022-11-16 12:38:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 420 states have (on average 1.707142857142857) internal successors, (717), 439 states have internal predecessors, (717), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-16 12:38:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 882 transitions. [2022-11-16 12:38:07,029 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 882 transitions. Word has length 76 [2022-11-16 12:38:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:07,034 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 882 transitions. [2022-11-16 12:38:07,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:38:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 882 transitions. [2022-11-16 12:38:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:38:07,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:07,048 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, 1] [2022-11-16 12:38:07,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:38:07,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash 620960083, now seen corresponding path program 1 times [2022-11-16 12:38:07,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:07,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044747821] [2022-11-16 12:38:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:38:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:38:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:38:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 12:38:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:07,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:07,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044747821] [2022-11-16 12:38:07,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044747821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:07,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:07,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:38:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121990121] [2022-11-16 12:38:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:07,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:38:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:38:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:07,721 INFO L87 Difference]: Start difference. First operand 526 states and 882 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:38:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:16,445 INFO L93 Difference]: Finished difference Result 1299 states and 2213 transitions. [2022-11-16 12:38:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:38:16,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2022-11-16 12:38:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:16,453 INFO L225 Difference]: With dead ends: 1299 [2022-11-16 12:38:16,453 INFO L226 Difference]: Without dead ends: 791 [2022-11-16 12:38:16,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:38:16,458 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1857 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 5081 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 5610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 5081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:16,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3092 Invalid, 5610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [529 Valid, 5081 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 12:38:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-11-16 12:38:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 530. [2022-11-16 12:38:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 442 states have internal predecessors, (719), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (82), 79 states have call predecessors, (82), 80 states have call successors, (82) [2022-11-16 12:38:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 886 transitions. [2022-11-16 12:38:16,603 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 886 transitions. Word has length 82 [2022-11-16 12:38:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:16,603 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 886 transitions. [2022-11-16 12:38:16,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:38:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 886 transitions. [2022-11-16 12:38:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:38:16,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:16,609 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:16,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:38:16,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 479075021, now seen corresponding path program 1 times [2022-11-16 12:38:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994784750] [2022-11-16 12:38:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:38:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:38:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:38:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:38:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:38:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:17,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:17,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994784750] [2022-11-16 12:38:17,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994784750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:17,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:17,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:38:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181008066] [2022-11-16 12:38:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:17,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:38:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:38:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:38:17,331 INFO L87 Difference]: Start difference. First operand 530 states and 886 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:38:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:38,331 INFO L93 Difference]: Finished difference Result 2420 states and 4264 transitions. [2022-11-16 12:38:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:38:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-11-16 12:38:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:38,349 INFO L225 Difference]: With dead ends: 2420 [2022-11-16 12:38:38,349 INFO L226 Difference]: Without dead ends: 1908 [2022-11-16 12:38:38,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:38:38,357 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 2978 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 8836 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 10040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 8836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 4059 Invalid, 10040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1204 Valid, 8836 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-11-16 12:38:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-11-16 12:38:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1375. [2022-11-16 12:38:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1091 states have (on average 1.6608615948670944) internal successors, (1812), 1138 states have internal predecessors, (1812), 224 states have call successors, (224), 56 states have call predecessors, (224), 59 states have return successors, (258), 216 states have call predecessors, (258), 219 states have call successors, (258) [2022-11-16 12:38:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2294 transitions. [2022-11-16 12:38:38,750 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2294 transitions. Word has length 87 [2022-11-16 12:38:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:38,750 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 2294 transitions. [2022-11-16 12:38:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:38:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2294 transitions. [2022-11-16 12:38:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 12:38:38,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:38,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:38,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:38:38,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -245229541, now seen corresponding path program 1 times [2022-11-16 12:38:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:38,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101559539] [2022-11-16 12:38:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:38:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:38:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:38:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:38:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:38:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:38:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101559539] [2022-11-16 12:38:39,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101559539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:39,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:39,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:38:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118490685] [2022-11-16 12:38:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:39,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:38:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:38:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:38:39,628 INFO L87 Difference]: Start difference. First operand 1375 states and 2294 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 12:38:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:56,134 INFO L93 Difference]: Finished difference Result 3513 states and 6016 transitions. [2022-11-16 12:38:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:38:56,134 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2022-11-16 12:38:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:56,152 INFO L225 Difference]: With dead ends: 3513 [2022-11-16 12:38:56,152 INFO L226 Difference]: Without dead ends: 1982 [2022-11-16 12:38:56,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:38:56,164 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 4141 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 8734 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 9834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 8734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 4279 Invalid, 9834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 8734 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-16 12:38:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2022-11-16 12:38:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1450. [2022-11-16 12:38:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.6309834638816363) internal successors, (1874), 1198 states have internal predecessors, (1874), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2022-11-16 12:38:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2389 transitions. [2022-11-16 12:38:56,624 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2389 transitions. Word has length 96 [2022-11-16 12:38:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:56,624 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2389 transitions. [2022-11-16 12:38:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 12:38:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2389 transitions. [2022-11-16 12:38:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 12:38:56,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:56,628 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:38:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:38:56,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash -54702925, now seen corresponding path program 1 times [2022-11-16 12:38:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798024032] [2022-11-16 12:38:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:38:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 12:38:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:38:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:38:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:38:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:38:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:38:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:38:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:38:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:57,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798024032] [2022-11-16 12:38:57,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798024032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:57,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:57,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:38:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841406901] [2022-11-16 12:38:57,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:38:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:38:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:57,149 INFO L87 Difference]: Start difference. First operand 1450 states and 2389 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:03,609 INFO L93 Difference]: Finished difference Result 3392 states and 5718 transitions. [2022-11-16 12:39:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:39:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-11-16 12:39:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:03,626 INFO L225 Difference]: With dead ends: 3392 [2022-11-16 12:39:03,626 INFO L226 Difference]: Without dead ends: 1960 [2022-11-16 12:39:03,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:03,635 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1774 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:03,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 1595 Invalid, 3170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [504 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 12:39:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-11-16 12:39:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1450. [2022-11-16 12:39:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.630113141862489) internal successors, (1873), 1198 states have internal predecessors, (1873), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2022-11-16 12:39:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2388 transitions. [2022-11-16 12:39:04,044 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2388 transitions. Word has length 99 [2022-11-16 12:39:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:04,044 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2388 transitions. [2022-11-16 12:39:04,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2388 transitions. [2022-11-16 12:39:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:39:04,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:04,049 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:39:04,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1292774038, now seen corresponding path program 1 times [2022-11-16 12:39:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:04,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385587892] [2022-11-16 12:39:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:39:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:04,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385587892] [2022-11-16 12:39:04,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385587892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:04,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:04,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:39:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017397381] [2022-11-16 12:39:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:39:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:39:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:39:04,688 INFO L87 Difference]: Start difference. First operand 1450 states and 2388 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:39:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:14,382 INFO L93 Difference]: Finished difference Result 3472 states and 5951 transitions. [2022-11-16 12:39:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:39:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-11-16 12:39:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:14,404 INFO L225 Difference]: With dead ends: 3472 [2022-11-16 12:39:14,405 INFO L226 Difference]: Without dead ends: 2080 [2022-11-16 12:39:14,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:39:14,413 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 2101 mSDsluCounter, 3616 mSDsCounter, 0 mSdLazyCounter, 6323 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 6918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 6323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:14,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 4101 Invalid, 6918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [595 Valid, 6323 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 12:39:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-11-16 12:39:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1474. [2022-11-16 12:39:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6192937123169682) internal successors, (1880), 1218 states have internal predecessors, (1880), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2431 transitions. [2022-11-16 12:39:14,805 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2431 transitions. Word has length 100 [2022-11-16 12:39:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:14,806 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2431 transitions. [2022-11-16 12:39:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:39:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2431 transitions. [2022-11-16 12:39:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:39:14,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:14,810 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:39:14,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash 271876460, now seen corresponding path program 1 times [2022-11-16 12:39:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:14,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454328944] [2022-11-16 12:39:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:39:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:15,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:15,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454328944] [2022-11-16 12:39:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454328944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:15,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:15,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765589100] [2022-11-16 12:39:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:15,299 INFO L87 Difference]: Start difference. First operand 1474 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:21,673 INFO L93 Difference]: Finished difference Result 3408 states and 5773 transitions. [2022-11-16 12:39:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:21,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-11-16 12:39:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:21,689 INFO L225 Difference]: With dead ends: 3408 [2022-11-16 12:39:21,690 INFO L226 Difference]: Without dead ends: 1992 [2022-11-16 12:39:21,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:21,697 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1450 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:21,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1663 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 12:39:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-16 12:39:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-11-16 12:39:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6149870801033592) internal successors, (1875), 1218 states have internal predecessors, (1875), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2426 transitions. [2022-11-16 12:39:22,185 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2426 transitions. Word has length 101 [2022-11-16 12:39:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:22,185 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2426 transitions. [2022-11-16 12:39:22,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2426 transitions. [2022-11-16 12:39:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:39:22,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:22,191 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:22,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:39:22,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash -186141934, now seen corresponding path program 1 times [2022-11-16 12:39:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:22,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180929646] [2022-11-16 12:39:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:39:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:22,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:22,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180929646] [2022-11-16 12:39:22,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180929646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:22,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:22,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210477787] [2022-11-16 12:39:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:22,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:22,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:22,874 INFO L87 Difference]: Start difference. First operand 1474 states and 2426 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:29,953 INFO L93 Difference]: Finished difference Result 3408 states and 5768 transitions. [2022-11-16 12:39:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:29,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-11-16 12:39:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:29,968 INFO L225 Difference]: With dead ends: 3408 [2022-11-16 12:39:29,968 INFO L226 Difference]: Without dead ends: 1992 [2022-11-16 12:39:29,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:29,976 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1018 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:29,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1725 Invalid, 3025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:39:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-16 12:39:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-11-16 12:39:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6106804478897503) internal successors, (1870), 1218 states have internal predecessors, (1870), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2421 transitions. [2022-11-16 12:39:30,456 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2421 transitions. Word has length 102 [2022-11-16 12:39:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:30,457 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2421 transitions. [2022-11-16 12:39:30,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2421 transitions. [2022-11-16 12:39:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:39:30,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:30,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:39:30,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:30,462 INFO L85 PathProgramCache]: Analyzing trace with hash -250701561, now seen corresponding path program 1 times [2022-11-16 12:39:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:30,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626096307] [2022-11-16 12:39:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:39:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:30,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:30,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626096307] [2022-11-16 12:39:30,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626096307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:30,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:30,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603318270] [2022-11-16 12:39:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:30,995 INFO L87 Difference]: Start difference. First operand 1474 states and 2421 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:38,052 INFO L93 Difference]: Finished difference Result 3408 states and 5763 transitions. [2022-11-16 12:39:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-11-16 12:39:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:38,064 INFO L225 Difference]: With dead ends: 3408 [2022-11-16 12:39:38,064 INFO L226 Difference]: Without dead ends: 1992 [2022-11-16 12:39:38,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:38,072 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1025 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:38,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1725 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:39:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-16 12:39:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-11-16 12:39:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6063738156761413) internal successors, (1865), 1218 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2416 transitions. [2022-11-16 12:39:38,748 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2416 transitions. Word has length 103 [2022-11-16 12:39:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2416 transitions. [2022-11-16 12:39:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2416 transitions. [2022-11-16 12:39:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:39:38,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:38,753 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:38,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:39:38,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 288097926, now seen corresponding path program 1 times [2022-11-16 12:39:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:38,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267391154] [2022-11-16 12:39:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:38,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:38,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:39:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:39,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:39,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267391154] [2022-11-16 12:39:39,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267391154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:39,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:39,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718713827] [2022-11-16 12:39:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:39,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:39,342 INFO L87 Difference]: Start difference. First operand 1474 states and 2416 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:46,830 INFO L93 Difference]: Finished difference Result 3423 states and 5778 transitions. [2022-11-16 12:39:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:39:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-11-16 12:39:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:46,843 INFO L225 Difference]: With dead ends: 3423 [2022-11-16 12:39:46,844 INFO L226 Difference]: Without dead ends: 2013 [2022-11-16 12:39:46,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:39:46,851 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1411 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:46,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1677 Invalid, 3053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:39:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-16 12:39:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1476. [2022-11-16 12:39:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6053310404127257) internal successors, (1867), 1220 states have internal predecessors, (1867), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2418 transitions. [2022-11-16 12:39:47,304 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2418 transitions. Word has length 103 [2022-11-16 12:39:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:47,305 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2418 transitions. [2022-11-16 12:39:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2418 transitions. [2022-11-16 12:39:47,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-16 12:39:47,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:47,310 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:47,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:39:47,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1002941299, now seen corresponding path program 1 times [2022-11-16 12:39:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:47,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114656742] [2022-11-16 12:39:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:47,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114656742] [2022-11-16 12:39:47,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114656742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:47,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:47,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144340468] [2022-11-16 12:39:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:47,912 INFO L87 Difference]: Start difference. First operand 1476 states and 2418 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:54,464 INFO L93 Difference]: Finished difference Result 3414 states and 5764 transitions. [2022-11-16 12:39:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-16 12:39:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:54,476 INFO L225 Difference]: With dead ends: 3414 [2022-11-16 12:39:54,477 INFO L226 Difference]: Without dead ends: 1996 [2022-11-16 12:39:54,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:54,485 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1851 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:54,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 1616 Invalid, 2990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [500 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 12:39:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2022-11-16 12:39:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1476. [2022-11-16 12:39:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6010318142734308) internal successors, (1862), 1220 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:39:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2413 transitions. [2022-11-16 12:39:54,951 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2413 transitions. Word has length 104 [2022-11-16 12:39:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:54,951 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2413 transitions. [2022-11-16 12:39:54,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:39:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2413 transitions. [2022-11-16 12:39:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-16 12:39:54,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:54,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:39:54,955 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1927738160, now seen corresponding path program 1 times [2022-11-16 12:39:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49651780] [2022-11-16 12:39:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:39:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:39:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:39:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:39:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:39:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:39:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:55,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49651780] [2022-11-16 12:39:55,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49651780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:55,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:55,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871303948] [2022-11-16 12:39:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:55,472 INFO L87 Difference]: Start difference. First operand 1476 states and 2413 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:02,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:02,922 INFO L93 Difference]: Finished difference Result 3427 states and 5775 transitions. [2022-11-16 12:40:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:40:02,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-16 12:40:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:02,937 INFO L225 Difference]: With dead ends: 3427 [2022-11-16 12:40:02,937 INFO L226 Difference]: Without dead ends: 2017 [2022-11-16 12:40:02,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:40:02,945 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1002 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:02,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1740 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:40:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-11-16 12:40:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1479. [2022-11-16 12:40:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5994854202401372) internal successors, (1865), 1223 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:40:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2416 transitions. [2022-11-16 12:40:03,498 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2416 transitions. Word has length 104 [2022-11-16 12:40:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:03,498 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 2416 transitions. [2022-11-16 12:40:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2416 transitions. [2022-11-16 12:40:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:40:03,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:03,514 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:40:03,515 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash 619202400, now seen corresponding path program 1 times [2022-11-16 12:40:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:03,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928637948] [2022-11-16 12:40:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:40:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:04,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:04,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928637948] [2022-11-16 12:40:04,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928637948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:04,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:04,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:40:04,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997065721] [2022-11-16 12:40:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:40:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:40:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:40:04,024 INFO L87 Difference]: Start difference. First operand 1479 states and 2416 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:10,526 INFO L93 Difference]: Finished difference Result 3463 states and 5818 transitions. [2022-11-16 12:40:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:40:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-11-16 12:40:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:10,538 INFO L225 Difference]: With dead ends: 3463 [2022-11-16 12:40:10,538 INFO L226 Difference]: Without dead ends: 2002 [2022-11-16 12:40:10,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:40:10,544 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1748 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:10,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1616 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 12:40:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-16 12:40:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1479. [2022-11-16 12:40:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5986277873070327) internal successors, (1864), 1223 states have internal predecessors, (1864), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:40:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2415 transitions. [2022-11-16 12:40:11,099 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2415 transitions. Word has length 105 [2022-11-16 12:40:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:11,099 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 2415 transitions. [2022-11-16 12:40:11,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2415 transitions. [2022-11-16 12:40:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:40:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:11,102 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:11,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:40:11,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1030934399, now seen corresponding path program 1 times [2022-11-16 12:40:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:11,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9641438] [2022-11-16 12:40:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:40:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:11,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9641438] [2022-11-16 12:40:11,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9641438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:11,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:11,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:40:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375428257] [2022-11-16 12:40:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:40:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:40:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:40:11,693 INFO L87 Difference]: Start difference. First operand 1479 states and 2415 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:20,276 INFO L93 Difference]: Finished difference Result 3423 states and 5768 transitions. [2022-11-16 12:40:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:40:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-11-16 12:40:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:20,289 INFO L225 Difference]: With dead ends: 3423 [2022-11-16 12:40:20,289 INFO L226 Difference]: Without dead ends: 1992 [2022-11-16 12:40:20,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:40:20,293 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1432 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 4745 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 5116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 4745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:20,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 2934 Invalid, 5116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [371 Valid, 4745 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 12:40:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-16 12:40:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1471. [2022-11-16 12:40:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1158 states have (on average 1.6001727115716753) internal successors, (1853), 1215 states have internal predecessors, (1853), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:40:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2404 transitions. [2022-11-16 12:40:20,745 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2404 transitions. Word has length 105 [2022-11-16 12:40:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:20,745 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2404 transitions. [2022-11-16 12:40:20,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2404 transitions. [2022-11-16 12:40:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:40:20,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:20,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:40:20,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1784898178, now seen corresponding path program 1 times [2022-11-16 12:40:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:20,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837047001] [2022-11-16 12:40:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:40:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837047001] [2022-11-16 12:40:21,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837047001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:21,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:21,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:40:21,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151945187] [2022-11-16 12:40:21,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:21,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:40:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:40:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:40:21,351 INFO L87 Difference]: Start difference. First operand 1471 states and 2404 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:30,252 INFO L93 Difference]: Finished difference Result 3423 states and 5764 transitions. [2022-11-16 12:40:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:40:30,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-11-16 12:40:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:30,264 INFO L225 Difference]: With dead ends: 3423 [2022-11-16 12:40:30,265 INFO L226 Difference]: Without dead ends: 2013 [2022-11-16 12:40:30,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:40:30,271 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1396 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 4688 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 5065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 4688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:30,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 2934 Invalid, 5065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 4688 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 12:40:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-16 12:40:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1475. [2022-11-16 12:40:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1162 states have (on average 1.5981067125645438) internal successors, (1857), 1219 states have internal predecessors, (1857), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:40:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2408 transitions. [2022-11-16 12:40:30,752 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2408 transitions. Word has length 105 [2022-11-16 12:40:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:30,753 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 2408 transitions. [2022-11-16 12:40:30,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2408 transitions. [2022-11-16 12:40:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-16 12:40:30,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:30,755 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:30,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:40:30,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1225052650, now seen corresponding path program 1 times [2022-11-16 12:40:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:30,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932716637] [2022-11-16 12:40:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 12:40:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932716637] [2022-11-16 12:40:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932716637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:31,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:31,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:40:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963994151] [2022-11-16 12:40:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:40:31,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:31,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:40:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:40:31,332 INFO L87 Difference]: Start difference. First operand 1475 states and 2408 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:39,567 INFO L93 Difference]: Finished difference Result 3431 states and 5770 transitions. [2022-11-16 12:40:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:40:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-11-16 12:40:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:39,582 INFO L225 Difference]: With dead ends: 3431 [2022-11-16 12:40:39,583 INFO L226 Difference]: Without dead ends: 2021 [2022-11-16 12:40:39,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:40:39,588 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1794 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:39,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 2899 Invalid, 5161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [505 Valid, 4656 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:40:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-16 12:40:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1480. [2022-11-16 12:40:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1167 states have (on average 1.5955441302485005) internal successors, (1862), 1224 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-11-16 12:40:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2413 transitions. [2022-11-16 12:40:40,280 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2413 transitions. Word has length 106 [2022-11-16 12:40:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:40,281 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2413 transitions. [2022-11-16 12:40:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:40:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2413 transitions. [2022-11-16 12:40:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:40:40,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:40,283 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:40,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:40:40,284 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1470623475, now seen corresponding path program 1 times [2022-11-16 12:40:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299516440] [2022-11-16 12:40:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:40,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:40:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:40,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299516440] [2022-11-16 12:40:40,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299516440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:40,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:40,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:40:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585450171] [2022-11-16 12:40:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:40,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:40:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:40:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:40:40,910 INFO L87 Difference]: Start difference. First operand 1480 states and 2413 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:54,963 INFO L93 Difference]: Finished difference Result 4849 states and 8352 transitions. [2022-11-16 12:40:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:40:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-11-16 12:40:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:54,982 INFO L225 Difference]: With dead ends: 4849 [2022-11-16 12:40:54,983 INFO L226 Difference]: Without dead ends: 3447 [2022-11-16 12:40:54,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:40:54,988 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 4122 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4186 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:54,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4186 Valid, 2223 Invalid, 6102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-16 12:40:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2022-11-16 12:40:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2518. [2022-11-16 12:40:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 1989 states have (on average 1.592760180995475) internal successors, (3168), 2078 states have internal predecessors, (3168), 396 states have call successors, (396), 102 states have call predecessors, (396), 132 states have return successors, (535), 397 states have call predecessors, (535), 391 states have call successors, (535) [2022-11-16 12:40:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4099 transitions. [2022-11-16 12:40:55,824 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4099 transitions. Word has length 107 [2022-11-16 12:40:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:55,824 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4099 transitions. [2022-11-16 12:40:55,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:40:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4099 transitions. [2022-11-16 12:40:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 12:40:55,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:55,827 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:40:55,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:40:55,828 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1495805578, now seen corresponding path program 1 times [2022-11-16 12:40:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:55,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479232254] [2022-11-16 12:40:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:40:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:40:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:40:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:40:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:40:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:40:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:40:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:40:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:40:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:40:56,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479232254] [2022-11-16 12:40:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479232254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998866105] [2022-11-16 12:40:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:56,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:56,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:56,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:56,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:40:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:40:56,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:40:57,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:40:57,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998866105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:57,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:40:57,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:40:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802293765] [2022-11-16 12:40:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:57,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:57,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:40:57,218 INFO L87 Difference]: Start difference. First operand 2518 states and 4099 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:41:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:03,308 INFO L93 Difference]: Finished difference Result 8499 states and 14324 transitions. [2022-11-16 12:41:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-16 12:41:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:03,344 INFO L225 Difference]: With dead ends: 8499 [2022-11-16 12:41:03,344 INFO L226 Difference]: Without dead ends: 6059 [2022-11-16 12:41:03,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:41:03,360 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2668 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2791 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:03,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2791 Valid, 1578 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:41:03,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2022-11-16 12:41:05,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 5361. [2022-11-16 12:41:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4153 states have (on average 1.589212617385023) internal successors, (6600), 4358 states have internal predecessors, (6600), 932 states have call successors, (932), 199 states have call predecessors, (932), 275 states have return successors, (1338), 948 states have call predecessors, (1338), 927 states have call successors, (1338) [2022-11-16 12:41:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8870 transitions. [2022-11-16 12:41:05,405 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8870 transitions. Word has length 109 [2022-11-16 12:41:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:05,405 INFO L495 AbstractCegarLoop]: Abstraction has 5361 states and 8870 transitions. [2022-11-16 12:41:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:41:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8870 transitions. [2022-11-16 12:41:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 12:41:05,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:05,408 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:41:05,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:05,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:41:05,615 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash 549562617, now seen corresponding path program 1 times [2022-11-16 12:41:05,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:05,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562733641] [2022-11-16 12:41:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:41:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:41:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:41:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:41:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:41:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:41:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:41:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:41:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:41:06,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562733641] [2022-11-16 12:41:06,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562733641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:06,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503640010] [2022-11-16 12:41:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:06,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:06,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:06,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:41:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:06,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:41:06,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:41:06,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:06,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503640010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:06,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:06,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:41:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760471304] [2022-11-16 12:41:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:41:06,914 INFO L87 Difference]: Start difference. First operand 5361 states and 8870 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:41:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:17,461 INFO L93 Difference]: Finished difference Result 18789 states and 32510 transitions. [2022-11-16 12:41:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-11-16 12:41:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:17,576 INFO L225 Difference]: With dead ends: 18789 [2022-11-16 12:41:17,576 INFO L226 Difference]: Without dead ends: 13506 [2022-11-16 12:41:17,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:41:17,620 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 2147 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:17,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1806 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3231 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 12:41:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2022-11-16 12:41:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 11732. [2022-11-16 12:41:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11732 states, 8901 states have (on average 1.5828558588922592) internal successors, (14089), 9378 states have internal predecessors, (14089), 2254 states have call successors, (2254), 393 states have call predecessors, (2254), 576 states have return successors, (3410), 2320 states have call predecessors, (3410), 2249 states have call successors, (3410) [2022-11-16 12:41:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11732 states to 11732 states and 19753 transitions. [2022-11-16 12:41:23,513 INFO L78 Accepts]: Start accepts. Automaton has 11732 states and 19753 transitions. Word has length 110 [2022-11-16 12:41:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:23,513 INFO L495 AbstractCegarLoop]: Abstraction has 11732 states and 19753 transitions. [2022-11-16 12:41:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:41:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11732 states and 19753 transitions. [2022-11-16 12:41:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 12:41:23,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:23,518 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:41:23,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:23,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:23,735 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash -354495002, now seen corresponding path program 1 times [2022-11-16 12:41:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:23,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447173471] [2022-11-16 12:41:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:41:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:41:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:41:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:41:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:41:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:41:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:41:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:41:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:41:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:24,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447173471] [2022-11-16 12:41:24,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447173471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:24,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254232369] [2022-11-16 12:41:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:24,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:24,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:24,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:24,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:41:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:25,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:41:25,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:41:25,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:25,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254232369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:25,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:25,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:41:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873699013] [2022-11-16 12:41:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:41:25,285 INFO L87 Difference]: Start difference. First operand 11732 states and 19753 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:41:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:46,262 INFO L93 Difference]: Finished difference Result 42664 states and 76386 transitions. [2022-11-16 12:41:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-11-16 12:41:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:46,626 INFO L225 Difference]: With dead ends: 42664 [2022-11-16 12:41:46,626 INFO L226 Difference]: Without dead ends: 31010 [2022-11-16 12:41:46,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:41:46,748 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 3195 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:46,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 1437 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:41:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31010 states. [2022-11-16 12:42:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31010 to 26424. [2022-11-16 12:42:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 19612 states have (on average 1.5754130124413623) internal successors, (30897), 20738 states have internal predecessors, (30897), 5593 states have call successors, (5593), 781 states have call predecessors, (5593), 1218 states have return successors, (9089), 5819 states have call predecessors, (9089), 5588 states have call successors, (9089) [2022-11-16 12:42:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 45579 transitions. [2022-11-16 12:42:01,759 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 45579 transitions. Word has length 111 [2022-11-16 12:42:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:01,759 INFO L495 AbstractCegarLoop]: Abstraction has 26424 states and 45579 transitions. [2022-11-16 12:42:01,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 12:42:01,760 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 45579 transitions. [2022-11-16 12:42:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 12:42:01,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:01,763 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:42:01,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:01,975 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash 49192981, now seen corresponding path program 1 times [2022-11-16 12:42:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:01,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946916499] [2022-11-16 12:42:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:42:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:42:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:42:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:42:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:42:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:42:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:42:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:42:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:42:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:42:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:42:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:42:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946916499] [2022-11-16 12:42:02,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946916499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087587991] [2022-11-16 12:42:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:02,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:02,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:02,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:02,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86bf209a-97c7-49a7-8fa0-fd67be87c4a4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:42:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:42:02,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:42:03,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:03,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087587991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:03,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:03,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:42:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120179102] [2022-11-16 12:42:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:03,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:42:03,214 INFO L87 Difference]: Start difference. First operand 26424 states and 45579 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11)