./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R --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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- 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-38b53e6 [2022-11-25 17:46:57,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:46:57,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:46:57,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:46:57,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:46:57,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:46:57,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:46:57,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:46:57,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:46:57,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:46:57,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:46:57,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:46:57,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:46:57,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:46:57,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:46:57,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:46:57,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:46:57,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:46:57,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:46:57,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:46:57,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:46:57,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:46:57,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:46:57,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:46:57,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:46:57,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:46:57,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:46:57,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:46:57,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:46:57,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:46:57,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:46:57,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:46:57,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:46:57,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:46:57,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:46:57,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:46:57,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:46:57,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:46:57,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:46:57,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:46:57,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:46:57,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:46:57,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:46:57,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:46:57,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:46:57,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:46:57,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:46:57,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:46:57,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:46:57,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:46:57,172 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:46:57,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:46:57,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:46:57,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:46:57,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:46:57,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:46:57,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:46:57,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:46:57,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:46:57,175 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:46:57,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:46:57,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:46:57,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:46:57,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:46:57,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:46:57,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:46:57,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:46:57,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:46:57,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:46:57,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:46:57,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:46:57,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:46:57,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:46:57,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:46:57,179 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:46:57,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:46:57,179 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2022-11-25 17:46:57,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:46:57,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:46:57,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:46:57,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:46:57,469 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:46:57,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2022-11-25 17:47:00,557 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:47:00,922 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:47:00,922 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2022-11-25 17:47:00,948 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/data/25db342c9/4ef90213a9cb46e0b0895b5884de7cb4/FLAGa9c57c7ee [2022-11-25 17:47:00,970 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/data/25db342c9/4ef90213a9cb46e0b0895b5884de7cb4 [2022-11-25 17:47:00,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:47:00,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:47:00,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:47:00,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:47:00,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:47:00,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:00" (1/1) ... [2022-11-25 17:47:00,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e14b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:00, skipping insertion in model container [2022-11-25 17:47:00,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:00" (1/1) ... [2022-11-25 17:47:00,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:47:01,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:47:01,285 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2022-11-25 17:47:01,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:47:01,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:47:01,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2022-11-25 17:47:01,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:47:01,739 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:47:01,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01 WrapperNode [2022-11-25 17:47:01,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:47:01,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:47:01,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:47:01,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:47:01,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,889 INFO L138 Inliner]: procedures = 88, calls = 338, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 798 [2022-11-25 17:47:01,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:47:01,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:47:01,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:47:01,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:47:01,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:47:01,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:47:01,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:47:01,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:47:01,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (1/1) ... [2022-11-25 17:47:01,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:47:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:47:01,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:47:02,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:47:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:47:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-25 17:47:02,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-25 17:47:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 17:47:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 17:47:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 17:47:02,066 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 17:47:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 17:47:02,067 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 17:47:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-25 17:47:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-25 17:47:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 17:47:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 17:47:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 17:47:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 17:47:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 17:47:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 17:47:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 17:47:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 17:47:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 17:47:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 17:47:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 17:47:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 17:47:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 17:47:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 17:47:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-25 17:47:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-25 17:47:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 17:47:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 17:47:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-25 17:47:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-25 17:47:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 17:47:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 17:47:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 17:47:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 17:47:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 17:47:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 17:47:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 17:47:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 17:47:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:47:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 17:47:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 17:47:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 17:47:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 17:47:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 17:47:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 17:47:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 17:47:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 17:47:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:47:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:47:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 17:47:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 17:47:02,249 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:47:02,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:47:03,595 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:47:03,607 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:47:03,608 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:47:03,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:03 BoogieIcfgContainer [2022-11-25 17:47:03,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:47:03,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:47:03,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:47:03,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:47:03,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:47:00" (1/3) ... [2022-11-25 17:47:03,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb84123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:03, skipping insertion in model container [2022-11-25 17:47:03,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:01" (2/3) ... [2022-11-25 17:47:03,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb84123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:03, skipping insertion in model container [2022-11-25 17:47:03,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:03" (3/3) ... [2022-11-25 17:47:03,622 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2022-11-25 17:47:03,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:47:03,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:47:03,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:47:03,743 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;@c987a39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:47:03,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:47:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 453 states have internal predecessors, (734), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-25 17:47:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-25 17:47:03,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:03,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:03,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2072698757, now seen corresponding path program 1 times [2022-11-25 17:47:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:03,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332655684] [2022-11-25 17:47:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 17:47:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 17:47:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:47:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:47:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:47:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332655684] [2022-11-25 17:47:05,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332655684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:05,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:05,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:47:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496696931] [2022-11-25 17:47:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:05,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:47:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:05,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:47:05,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:05,138 INFO L87 Difference]: Start difference. First operand has 561 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 453 states have internal predecessors, (734), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:15,979 INFO L93 Difference]: Finished difference Result 1473 states and 2556 transitions. [2022-11-25 17:47:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:47:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-11-25 17:47:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:16,006 INFO L225 Difference]: With dead ends: 1473 [2022-11-25 17:47:16,007 INFO L226 Difference]: Without dead ends: 912 [2022-11-25 17:47:16,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:47:16,020 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1152 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 5909 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 6243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:16,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 3375 Invalid, 6243 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [334 Valid, 5909 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-25 17:47:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-25 17:47:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 564. [2022-11-25 17:47:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 438 states have (on average 1.678082191780822) internal successors, (735), 456 states have internal predecessors, (735), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-11-25 17:47:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 936 transitions. [2022-11-25 17:47:16,353 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 936 transitions. Word has length 85 [2022-11-25 17:47:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:16,354 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 936 transitions. [2022-11-25 17:47:16,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 936 transitions. [2022-11-25 17:47:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 17:47:16,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:16,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:16,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:47:16,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash 778951319, now seen corresponding path program 1 times [2022-11-25 17:47:16,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:16,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691566461] [2022-11-25 17:47:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:47:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:47:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:47:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:47:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:47:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:17,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:17,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691566461] [2022-11-25 17:47:17,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691566461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:17,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:17,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:47:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58299890] [2022-11-25 17:47:17,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:47:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:47:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:17,129 INFO L87 Difference]: Start difference. First operand 564 states and 936 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:27,237 INFO L93 Difference]: Finished difference Result 1463 states and 2502 transitions. [2022-11-25 17:47:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:47:27,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-11-25 17:47:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:27,247 INFO L225 Difference]: With dead ends: 1463 [2022-11-25 17:47:27,247 INFO L226 Difference]: Without dead ends: 915 [2022-11-25 17:47:27,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:47:27,254 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1098 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 6316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 3247 Invalid, 6316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-25 17:47:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-25 17:47:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 564. [2022-11-25 17:47:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 438 states have (on average 1.6757990867579908) internal successors, (734), 456 states have internal predecessors, (734), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-11-25 17:47:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2022-11-25 17:47:27,425 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 86 [2022-11-25 17:47:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:27,425 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2022-11-25 17:47:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2022-11-25 17:47:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 17:47:27,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:27,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:27,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:47:27,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1606559886, now seen corresponding path program 1 times [2022-11-25 17:47:27,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:27,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452523879] [2022-11-25 17:47:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:47:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:47:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:47:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:47:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:47:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:47:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:27,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452523879] [2022-11-25 17:47:27,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452523879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:27,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:27,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:47:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798708827] [2022-11-25 17:47:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:27,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:47:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:47:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:47:27,907 INFO L87 Difference]: Start difference. First operand 564 states and 935 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 17:47:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:35,111 INFO L93 Difference]: Finished difference Result 1454 states and 2482 transitions. [2022-11-25 17:47:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:47:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-11-25 17:47:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:35,119 INFO L225 Difference]: With dead ends: 1454 [2022-11-25 17:47:35,119 INFO L226 Difference]: Without dead ends: 875 [2022-11-25 17:47:35,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:35,124 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1584 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 3033 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 3033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:35,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1671 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [541 Valid, 3033 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 17:47:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-25 17:47:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 540. [2022-11-25 17:47:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 417 states have (on average 1.6666666666666667) internal successors, (695), 433 states have internal predecessors, (695), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:47:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 892 transitions. [2022-11-25 17:47:35,311 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 892 transitions. Word has length 86 [2022-11-25 17:47:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:35,312 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 892 transitions. [2022-11-25 17:47:35,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 17:47:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 892 transitions. [2022-11-25 17:47:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 17:47:35,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:35,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:47:35,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1472924655, now seen corresponding path program 1 times [2022-11-25 17:47:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:35,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674431243] [2022-11-25 17:47:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:47:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:47:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:47:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:47:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:47:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:35,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:35,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674431243] [2022-11-25 17:47:35,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674431243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:35,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:35,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:47:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009421385] [2022-11-25 17:47:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:47:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:47:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:35,987 INFO L87 Difference]: Start difference. First operand 540 states and 892 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:45,249 INFO L93 Difference]: Finished difference Result 1417 states and 2413 transitions. [2022-11-25 17:47:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:47:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-25 17:47:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:45,256 INFO L225 Difference]: With dead ends: 1417 [2022-11-25 17:47:45,256 INFO L226 Difference]: Without dead ends: 869 [2022-11-25 17:47:45,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:47:45,261 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1107 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 5713 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 6039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 5713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:45,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 3135 Invalid, 6039 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [326 Valid, 5713 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 17:47:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-25 17:47:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 534. [2022-11-25 17:47:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 411 states have (on average 1.659367396593674) internal successors, (682), 427 states have internal predecessors, (682), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:47:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 879 transitions. [2022-11-25 17:47:45,426 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 879 transitions. Word has length 87 [2022-11-25 17:47:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:45,427 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 879 transitions. [2022-11-25 17:47:45,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 879 transitions. [2022-11-25 17:47:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 17:47:45,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:45,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:45,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:47:45,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash 114166783, now seen corresponding path program 1 times [2022-11-25 17:47:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821581851] [2022-11-25 17:47:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:47:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:47:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:47:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:47:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:47:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:45,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:45,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821581851] [2022-11-25 17:47:45,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821581851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:45,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:45,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:47:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999872760] [2022-11-25 17:47:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:45,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:47:45,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:47:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:45,989 INFO L87 Difference]: Start difference. First operand 534 states and 879 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:55,053 INFO L93 Difference]: Finished difference Result 1387 states and 2362 transitions. [2022-11-25 17:47:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:47:55,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-11-25 17:47:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:55,059 INFO L225 Difference]: With dead ends: 1387 [2022-11-25 17:47:55,060 INFO L226 Difference]: Without dead ends: 869 [2022-11-25 17:47:55,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:47:55,064 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1042 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5558 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 5558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:55,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3145 Invalid, 5884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [326 Valid, 5558 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-25 17:47:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-25 17:47:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 534. [2022-11-25 17:47:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 411 states have (on average 1.6569343065693432) internal successors, (681), 427 states have internal predecessors, (681), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:47:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 878 transitions. [2022-11-25 17:47:55,270 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 878 transitions. Word has length 88 [2022-11-25 17:47:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:55,271 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 878 transitions. [2022-11-25 17:47:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:47:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 878 transitions. [2022-11-25 17:47:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 17:47:55,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:55,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:55,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:47:55,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1749082962, now seen corresponding path program 1 times [2022-11-25 17:47:55,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:55,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160948673] [2022-11-25 17:47:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:47:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:47:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:47:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 17:47:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:47:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 17:47:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:47:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 17:47:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:47:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:55,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160948673] [2022-11-25 17:47:55,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160948673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:55,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:55,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:47:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530160847] [2022-11-25 17:47:55,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:47:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:47:55,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:47:55,830 INFO L87 Difference]: Start difference. First operand 534 states and 878 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:04,968 INFO L93 Difference]: Finished difference Result 1405 states and 2382 transitions. [2022-11-25 17:48:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:48:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-11-25 17:48:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:04,975 INFO L225 Difference]: With dead ends: 1405 [2022-11-25 17:48:04,976 INFO L226 Difference]: Without dead ends: 863 [2022-11-25 17:48:04,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:48:04,980 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1064 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 5615 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:04,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 3196 Invalid, 5943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [328 Valid, 5615 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-25 17:48:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-25 17:48:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 528. [2022-11-25 17:48:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6493827160493828) internal successors, (668), 421 states have internal predecessors, (668), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 865 transitions. [2022-11-25 17:48:05,198 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 865 transitions. Word has length 89 [2022-11-25 17:48:05,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:05,198 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 865 transitions. [2022-11-25 17:48:05,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 865 transitions. [2022-11-25 17:48:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:48:05,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:05,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:05,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:48:05,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash -318995648, now seen corresponding path program 1 times [2022-11-25 17:48:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:05,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717581390] [2022-11-25 17:48:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:48:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:48:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:48:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 17:48:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:48:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717581390] [2022-11-25 17:48:05,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717581390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:05,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:05,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:48:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414112521] [2022-11-25 17:48:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:48:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:48:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:05,725 INFO L87 Difference]: Start difference. First operand 528 states and 865 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:14,035 INFO L93 Difference]: Finished difference Result 1375 states and 2333 transitions. [2022-11-25 17:48:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:48:14,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-11-25 17:48:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:14,042 INFO L225 Difference]: With dead ends: 1375 [2022-11-25 17:48:14,042 INFO L226 Difference]: Without dead ends: 863 [2022-11-25 17:48:14,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:48:14,051 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 2006 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 5228 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 5228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 3085 Invalid, 5973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [745 Valid, 5228 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-25 17:48:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-25 17:48:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 528. [2022-11-25 17:48:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6469135802469135) internal successors, (667), 421 states have internal predecessors, (667), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 864 transitions. [2022-11-25 17:48:14,267 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 864 transitions. Word has length 90 [2022-11-25 17:48:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:14,267 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 864 transitions. [2022-11-25 17:48:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 864 transitions. [2022-11-25 17:48:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:48:14,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:14,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:48:14,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash 860076690, now seen corresponding path program 1 times [2022-11-25 17:48:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:14,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326618511] [2022-11-25 17:48:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 17:48:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:48:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:48:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:48:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:48:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:14,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326618511] [2022-11-25 17:48:14,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326618511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:14,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:14,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:48:14,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917315591] [2022-11-25 17:48:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:14,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:48:14,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:14,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:48:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:14,825 INFO L87 Difference]: Start difference. First operand 528 states and 864 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:23,681 INFO L93 Difference]: Finished difference Result 1393 states and 2351 transitions. [2022-11-25 17:48:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:48:23,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-25 17:48:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:23,687 INFO L225 Difference]: With dead ends: 1393 [2022-11-25 17:48:23,687 INFO L226 Difference]: Without dead ends: 857 [2022-11-25 17:48:23,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:48:23,690 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1548 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 5443 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 5443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:23,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 3053 Invalid, 5973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [530 Valid, 5443 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-25 17:48:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-25 17:48:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-25 17:48:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6390977443609023) internal successors, (654), 415 states have internal predecessors, (654), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 851 transitions. [2022-11-25 17:48:23,868 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 851 transitions. Word has length 91 [2022-11-25 17:48:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:23,869 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 851 transitions. [2022-11-25 17:48:23,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 851 transitions. [2022-11-25 17:48:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:48:23,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:23,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:48:23,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash -790852111, now seen corresponding path program 1 times [2022-11-25 17:48:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:23,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280566048] [2022-11-25 17:48:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 17:48:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:48:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:48:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:48:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:48:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:24,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280566048] [2022-11-25 17:48:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280566048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:24,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:24,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:48:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519176750] [2022-11-25 17:48:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:48:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:48:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:24,410 INFO L87 Difference]: Start difference. First operand 522 states and 851 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:33,291 INFO L93 Difference]: Finished difference Result 1363 states and 2304 transitions. [2022-11-25 17:48:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:48:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-25 17:48:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:33,297 INFO L225 Difference]: With dead ends: 1363 [2022-11-25 17:48:33,297 INFO L226 Difference]: Without dead ends: 857 [2022-11-25 17:48:33,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:48:33,300 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 988 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 5362 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 5690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:33,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 3171 Invalid, 5690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [328 Valid, 5362 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-25 17:48:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-25 17:48:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-25 17:48:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.636591478696742) internal successors, (653), 415 states have internal predecessors, (653), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2022-11-25 17:48:33,512 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 91 [2022-11-25 17:48:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:33,513 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2022-11-25 17:48:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2022-11-25 17:48:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 17:48:33,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:33,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:33,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:48:33,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2025245946, now seen corresponding path program 1 times [2022-11-25 17:48:33,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:33,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074662655] [2022-11-25 17:48:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:33,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:48:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 17:48:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:48:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:48:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 17:48:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:34,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074662655] [2022-11-25 17:48:34,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074662655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:34,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:34,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:48:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490681329] [2022-11-25 17:48:34,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:34,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:48:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:48:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:34,060 INFO L87 Difference]: Start difference. First operand 522 states and 850 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:42,568 INFO L93 Difference]: Finished difference Result 1375 states and 2314 transitions. [2022-11-25 17:48:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:48:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-25 17:48:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:42,574 INFO L225 Difference]: With dead ends: 1375 [2022-11-25 17:48:42,574 INFO L226 Difference]: Without dead ends: 869 [2022-11-25 17:48:42,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:48:42,577 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1981 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:42,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 3025 Invalid, 5908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [750 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-25 17:48:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-25 17:48:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 528. [2022-11-25 17:48:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6271604938271604) internal successors, (659), 421 states have internal predecessors, (659), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 856 transitions. [2022-11-25 17:48:42,770 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 856 transitions. Word has length 92 [2022-11-25 17:48:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:42,771 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 856 transitions. [2022-11-25 17:48:42,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 856 transitions. [2022-11-25 17:48:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 17:48:42,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:42,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:42,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:48:42,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash -764328696, now seen corresponding path program 1 times [2022-11-25 17:48:42,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:42,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462641621] [2022-11-25 17:48:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:48:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 17:48:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:48:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:48:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 17:48:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:43,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462641621] [2022-11-25 17:48:43,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462641621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:43,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:43,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:48:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885864541] [2022-11-25 17:48:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:48:43,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:48:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:43,342 INFO L87 Difference]: Start difference. First operand 528 states and 856 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:51,777 INFO L93 Difference]: Finished difference Result 1378 states and 2315 transitions. [2022-11-25 17:48:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:48:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-25 17:48:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:51,783 INFO L225 Difference]: With dead ends: 1378 [2022-11-25 17:48:51,783 INFO L226 Difference]: Without dead ends: 857 [2022-11-25 17:48:51,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:48:51,786 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1491 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 5195 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 5734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 5195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:51,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 3149 Invalid, 5734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [539 Valid, 5195 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-25 17:48:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-25 17:48:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-25 17:48:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6340852130325814) internal successors, (652), 415 states have internal predecessors, (652), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-25 17:48:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 849 transitions. [2022-11-25 17:48:52,009 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 849 transitions. Word has length 92 [2022-11-25 17:48:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:52,009 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 849 transitions. [2022-11-25 17:48:52,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 849 transitions. [2022-11-25 17:48:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 17:48:52,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:52,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:52,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:48:52,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash 641297367, now seen corresponding path program 1 times [2022-11-25 17:48:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:52,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551813972] [2022-11-25 17:48:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:48:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:48:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:48:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:48:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 17:48:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:48:52,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:52,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551813972] [2022-11-25 17:48:52,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551813972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623379027] [2022-11-25 17:48:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:52,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:52,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:52,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:48:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:52,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:48:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:53,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:48:53,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623379027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:53,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:48:53,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:48:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109034154] [2022-11-25 17:48:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:48:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:48:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:53,007 INFO L87 Difference]: Start difference. First operand 522 states and 849 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:53,434 INFO L93 Difference]: Finished difference Result 1478 states and 2437 transitions. [2022-11-25 17:48:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:48:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-11-25 17:48:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:53,439 INFO L225 Difference]: With dead ends: 1478 [2022-11-25 17:48:53,440 INFO L226 Difference]: Without dead ends: 974 [2022-11-25 17:48:53,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:53,443 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 795 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:53,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1680 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:48:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-25 17:48:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 959. [2022-11-25 17:48:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 740 states have (on average 1.6486486486486487) internal successors, (1220), 771 states have internal predecessors, (1220), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2022-11-25 17:48:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1574 transitions. [2022-11-25 17:48:53,789 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1574 transitions. Word has length 93 [2022-11-25 17:48:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:53,790 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1574 transitions. [2022-11-25 17:48:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1574 transitions. [2022-11-25 17:48:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 17:48:53,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:53,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:53,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:48:54,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:54,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:54,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1699468356, now seen corresponding path program 1 times [2022-11-25 17:48:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:54,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274853632] [2022-11-25 17:48:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:48:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:48:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:48:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:48:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:48:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:48:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274853632] [2022-11-25 17:48:54,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274853632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:48:54,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202752612] [2022-11-25 17:48:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:54,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:48:54,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:48:54,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:48:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:48:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:54,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:48:54,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:48:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:48:55,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:48:55,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202752612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:55,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:48:55,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:48:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952628741] [2022-11-25 17:48:55,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:48:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:48:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:55,011 INFO L87 Difference]: Start difference. First operand 959 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:48:55,501 INFO L93 Difference]: Finished difference Result 2352 states and 3889 transitions. [2022-11-25 17:48:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:48:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-11-25 17:48:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:48:55,509 INFO L225 Difference]: With dead ends: 2352 [2022-11-25 17:48:55,510 INFO L226 Difference]: Without dead ends: 1411 [2022-11-25 17:48:55,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:48:55,515 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 794 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:48:55,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1732 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:48:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-11-25 17:48:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1363. [2022-11-25 17:48:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1054 states have (on average 1.6622390891840608) internal successors, (1752), 1100 states have internal predecessors, (1752), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2022-11-25 17:48:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2257 transitions. [2022-11-25 17:48:55,986 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2257 transitions. Word has length 94 [2022-11-25 17:48:55,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:48:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2257 transitions. [2022-11-25 17:48:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 17:48:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2257 transitions. [2022-11-25 17:48:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 17:48:55,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:48:55,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:48:56,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:48:56,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:48:56,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:48:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:48:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2081985821, now seen corresponding path program 1 times [2022-11-25 17:48:56,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:48:56,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959856041] [2022-11-25 17:48:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:48:56,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:48:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:48:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:48:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:48:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:48:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:48:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:48:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:48:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:48:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:48:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:48:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:48:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:48:56,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959856041] [2022-11-25 17:48:56,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959856041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:48:56,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:48:56,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:48:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605116425] [2022-11-25 17:48:56,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:48:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:48:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:48:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:48:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:48:56,729 INFO L87 Difference]: Start difference. First operand 1363 states and 2257 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 17:49:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:49:24,102 INFO L93 Difference]: Finished difference Result 6773 states and 12415 transitions. [2022-11-25 17:49:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:49:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-11-25 17:49:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:49:24,146 INFO L225 Difference]: With dead ends: 6773 [2022-11-25 17:49:24,147 INFO L226 Difference]: Without dead ends: 5428 [2022-11-25 17:49:24,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:49:24,159 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 2827 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 8845 mSolverCounterSat, 1938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 10783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1938 IncrementalHoareTripleChecker+Valid, 8845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:49:24,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 3692 Invalid, 10783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1938 Valid, 8845 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-11-25 17:49:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-11-25 17:49:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 3275. [2022-11-25 17:49:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2379 states have (on average 1.6279949558638083) internal successors, (3873), 2563 states have internal predecessors, (3873), 745 states have call successors, (745), 112 states have call predecessors, (745), 150 states have return successors, (1172), 743 states have call predecessors, (1172), 741 states have call successors, (1172) [2022-11-25 17:49:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5790 transitions. [2022-11-25 17:49:25,860 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5790 transitions. Word has length 96 [2022-11-25 17:49:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:49:25,860 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 5790 transitions. [2022-11-25 17:49:25,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 17:49:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5790 transitions. [2022-11-25 17:49:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 17:49:25,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:49:25,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:49:25,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:49:25,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:49:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1845134538, now seen corresponding path program 1 times [2022-11-25 17:49:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:25,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867016833] [2022-11-25 17:49:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:49:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:49:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:49:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:49:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:49:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:49:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:49:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:49:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:26,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867016833] [2022-11-25 17:49:26,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867016833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:26,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716759547] [2022-11-25 17:49:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:26,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:26,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:26,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:49:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:26,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:49:26,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:26,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:49:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716759547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:49:26,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:49:26,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:49:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777586120] [2022-11-25 17:49:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:49:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:49:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:49:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:49:26,701 INFO L87 Difference]: Start difference. First operand 3275 states and 5790 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 17:49:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:49:29,891 INFO L93 Difference]: Finished difference Result 9757 states and 17450 transitions. [2022-11-25 17:49:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:49:29,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-11-25 17:49:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:49:29,949 INFO L225 Difference]: With dead ends: 9757 [2022-11-25 17:49:29,949 INFO L226 Difference]: Without dead ends: 6501 [2022-11-25 17:49:29,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:49:29,972 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 837 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:49:29,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:49:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2022-11-25 17:49:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 6434. [2022-11-25 17:49:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 4682 states have (on average 1.6315677061085005) internal successors, (7639), 5042 states have internal predecessors, (7639), 1456 states have call successors, (1456), 212 states have call predecessors, (1456), 295 states have return successors, (2383), 1467 states have call predecessors, (2383), 1450 states have call successors, (2383) [2022-11-25 17:49:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 11478 transitions. [2022-11-25 17:49:33,125 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 11478 transitions. Word has length 97 [2022-11-25 17:49:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:49:33,125 INFO L495 AbstractCegarLoop]: Abstraction has 6434 states and 11478 transitions. [2022-11-25 17:49:33,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 17:49:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 11478 transitions. [2022-11-25 17:49:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 17:49:33,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:49:33,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:49:33,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:49:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:49:33,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:49:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1438715508, now seen corresponding path program 1 times [2022-11-25 17:49:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395530659] [2022-11-25 17:49:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:49:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:49:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:49:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:49:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:49:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:49:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:49:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:49:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395530659] [2022-11-25 17:49:33,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395530659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518232997] [2022-11-25 17:49:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:33,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:33,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:33,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:49:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:49:34,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:34,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:49:34,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518232997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:49:34,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:49:34,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 17:49:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625037799] [2022-11-25 17:49:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:49:34,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:49:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:49:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:49:34,312 INFO L87 Difference]: Start difference. First operand 6434 states and 11478 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 17:49:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:49:41,145 INFO L93 Difference]: Finished difference Result 18746 states and 33843 transitions. [2022-11-25 17:49:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:49:41,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-25 17:49:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:49:41,232 INFO L225 Difference]: With dead ends: 18746 [2022-11-25 17:49:41,233 INFO L226 Difference]: Without dead ends: 12331 [2022-11-25 17:49:41,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:49:41,278 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 704 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:49:41,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1690 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:49:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-11-25 17:49:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12294. [2022-11-25 17:49:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12294 states, 8898 states have (on average 1.600472016183412) internal successors, (14241), 9610 states have internal predecessors, (14241), 2816 states have call successors, (2816), 418 states have call predecessors, (2816), 579 states have return successors, (4748), 2835 states have call predecessors, (4748), 2806 states have call successors, (4748) [2022-11-25 17:49:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12294 states to 12294 states and 21805 transitions. [2022-11-25 17:49:48,419 INFO L78 Accepts]: Start accepts. Automaton has 12294 states and 21805 transitions. Word has length 97 [2022-11-25 17:49:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:49:48,419 INFO L495 AbstractCegarLoop]: Abstraction has 12294 states and 21805 transitions. [2022-11-25 17:49:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 17:49:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12294 states and 21805 transitions. [2022-11-25 17:49:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 17:49:48,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:49:48,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:49:48,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:49:48,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:49:48,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:49:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:49:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2018713813, now seen corresponding path program 1 times [2022-11-25 17:49:48,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:49:48,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589051667] [2022-11-25 17:49:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:48,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:49:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:49:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:49:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:49:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:49:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:49:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:49:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:49:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:49:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 17:49:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 17:49:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:49:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:49:49,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589051667] [2022-11-25 17:49:49,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589051667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:49:49,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922352533] [2022-11-25 17:49:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:49:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:49:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:49:49,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:49:49,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:49:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:49:49,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:49:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:49:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:49:49,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:49:49,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922352533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:49:49,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:49:49,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 17:49:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717794155] [2022-11-25 17:49:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:49:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:49:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:49:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:49:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:49:49,784 INFO L87 Difference]: Start difference. First operand 12294 states and 21805 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:49:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:49:57,510 INFO L93 Difference]: Finished difference Result 24943 states and 44779 transitions. [2022-11-25 17:49:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:49:57,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2022-11-25 17:49:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:49:57,731 INFO L225 Difference]: With dead ends: 24943 [2022-11-25 17:49:57,732 INFO L226 Difference]: Without dead ends: 12667 [2022-11-25 17:49:57,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:49:57,793 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 1011 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:49:57,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3760 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:49:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12667 states. [2022-11-25 17:50:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12667 to 10905. [2022-11-25 17:50:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10905 states, 7933 states have (on average 1.587671750913904) internal successors, (12595), 8536 states have internal predecessors, (12595), 2450 states have call successors, (2450), 378 states have call predecessors, (2450), 521 states have return successors, (4074), 2466 states have call predecessors, (4074), 2440 states have call successors, (4074) [2022-11-25 17:50:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10905 states to 10905 states and 19119 transitions. [2022-11-25 17:50:03,182 INFO L78 Accepts]: Start accepts. Automaton has 10905 states and 19119 transitions. Word has length 102 [2022-11-25 17:50:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:50:03,183 INFO L495 AbstractCegarLoop]: Abstraction has 10905 states and 19119 transitions. [2022-11-25 17:50:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:50:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 10905 states and 19119 transitions. [2022-11-25 17:50:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 17:50:03,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:50:03,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:50:03,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:50:03,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26664ae7-4ebb-484e-b2df-ec5db2a22e3a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:50:03,394 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:50:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:50:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1829486226, now seen corresponding path program 1 times [2022-11-25 17:50:03,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:50:03,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733608963] [2022-11-25 17:50:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:50:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:50:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:50:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:50:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:50:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:50:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:50:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:50:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:50:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:50:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:50:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:50:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 17:50:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 17:50:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:50:03,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:50:03,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733608963] [2022-11-25 17:50:03,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733608963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:50:03,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:50:03,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:50:03,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663554780] [2022-11-25 17:50:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:50:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:50:03,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:50:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:50:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:50:03,810 INFO L87 Difference]: Start difference. First operand 10905 states and 19119 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 17:50:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:50:17,613 INFO L93 Difference]: Finished difference Result 24934 states and 45036 transitions. [2022-11-25 17:50:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:50:17,613 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-25 17:50:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:50:17,716 INFO L225 Difference]: With dead ends: 24934 [2022-11-25 17:50:17,716 INFO L226 Difference]: Without dead ends: 14047 [2022-11-25 17:50:17,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:50:17,802 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1453 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:50:17,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1767 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-25 17:50:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14047 states. [2022-11-25 17:50:22,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14047 to 11047. [2022-11-25 17:50:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11047 states, 8045 states have (on average 1.5814791796146674) internal successors, (12723), 8648 states have internal predecessors, (12723), 2460 states have call successors, (2460), 386 states have call predecessors, (2460), 541 states have return successors, (4129), 2472 states have call predecessors, (4129), 2450 states have call successors, (4129) [2022-11-25 17:50:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11047 states to 11047 states and 19312 transitions. [2022-11-25 17:50:22,996 INFO L78 Accepts]: Start accepts. Automaton has 11047 states and 19312 transitions. Word has length 102 [2022-11-25 17:50:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:50:22,996 INFO L495 AbstractCegarLoop]: Abstraction has 11047 states and 19312 transitions. [2022-11-25 17:50:22,997 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 17:50:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 11047 states and 19312 transitions. [2022-11-25 17:50:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 17:50:23,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:50:23,002 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] [2022-11-25 17:50:23,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:50:23,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:50:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:50:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -136354573, now seen corresponding path program 1 times [2022-11-25 17:50:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:50:23,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302801113] [2022-11-25 17:50:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:50:23,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:50:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:50:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:50:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:50:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:50:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:50:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:50:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:50:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:50:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:50:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:50:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:50:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 17:50:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 17:50:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:50:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:50:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:50:23,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302801113] [2022-11-25 17:50:23,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302801113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:50:23,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:50:23,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:50:23,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409473748] [2022-11-25 17:50:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:50:23,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:50:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:50:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:50:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:50:23,516 INFO L87 Difference]: Start difference. First operand 11047 states and 19312 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 17:51:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:10,008 INFO L93 Difference]: Finished difference Result 48124 states and 93811 transitions. [2022-11-25 17:51:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:51:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-11-25 17:51:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:10,407 INFO L225 Difference]: With dead ends: 48124 [2022-11-25 17:51:10,407 INFO L226 Difference]: Without dead ends: 37095 [2022-11-25 17:51:10,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:51:10,600 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 4792 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 8335 mSolverCounterSat, 2809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 11144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2809 IncrementalHoareTripleChecker+Valid, 8335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 3746 Invalid, 11144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2809 Valid, 8335 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2022-11-25 17:51:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37095 states. [2022-11-25 17:51:23,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37095 to 21957. [2022-11-25 17:51:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21957 states, 15996 states have (on average 1.5782695673918479) internal successors, (25246), 17193 states have internal predecessors, (25246), 4875 states have call successors, (4875), 766 states have call predecessors, (4875), 1085 states have return successors, (9015), 4917 states have call predecessors, (9015), 4857 states have call successors, (9015) [2022-11-25 17:51:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21957 states to 21957 states and 39136 transitions. [2022-11-25 17:51:23,371 INFO L78 Accepts]: Start accepts. Automaton has 21957 states and 39136 transitions. Word has length 110 [2022-11-25 17:51:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:23,371 INFO L495 AbstractCegarLoop]: Abstraction has 21957 states and 39136 transitions. [2022-11-25 17:51:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 17:51:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 21957 states and 39136 transitions. [2022-11-25 17:51:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:51:23,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:23,377 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] [2022-11-25 17:51:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:51:23,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1262361593, now seen corresponding path program 1 times [2022-11-25 17:51:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:23,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837739742] [2022-11-25 17:51:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:51:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:51:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:51:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:51:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:51:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:51:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:51:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:51:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:51:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 17:51:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:51:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 17:51:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 17:51:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:51:23,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:23,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837739742] [2022-11-25 17:51:23,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837739742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:23,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:23,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:51:23,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199534570] [2022-11-25 17:51:23,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:51:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:51:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:51:23,786 INFO L87 Difference]: Start difference. First operand 21957 states and 39136 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)