./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc --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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- 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-5e519f3 [2022-11-02 20:17:44,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:44,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:44,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:44,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:44,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:44,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:44,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:44,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:44,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:44,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:44,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:44,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:44,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:44,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:44,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:44,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:44,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:44,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:44,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:44,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:44,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:44,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:44,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:44,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:44,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:44,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:44,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:44,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:44,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:44,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:44,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:44,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:44,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:44,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:44,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:44,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:44,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:44,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:44,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:44,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:44,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:17:44,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:44,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:44,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:44,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:44,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:44,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:44,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:44,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:44,749 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:44,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:44,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:17:44,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:44,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:17:44,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:44,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:17:44,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:44,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:17:44,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:17:44,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:17:44,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:44,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:17:44,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:44,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:44,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:44,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:44,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:44,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:44,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:17:44,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:17:44,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:17:44,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:17:44,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:17:44,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:17:44,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2022-11-02 20:17:45,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:45,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:45,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:45,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:45,107 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:45,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-02 20:17:45,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/data/b66710ade/6517e7c3b22e482f8bd130825e93a4ed/FLAG711437bc7 [2022-11-02 20:17:45,784 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:45,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-11-02 20:17:45,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/data/b66710ade/6517e7c3b22e482f8bd130825e93a4ed/FLAG711437bc7 [2022-11-02 20:17:46,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/data/b66710ade/6517e7c3b22e482f8bd130825e93a4ed [2022-11-02 20:17:46,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:17:46,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:17:46,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:46,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:17:46,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:17:46,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:46,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bf03e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46, skipping insertion in model container [2022-11-02 20:17:46,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:46,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:17:46,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:46,667 WARN L230 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_38e4359f-544a-47b5-a327-568a680f1296/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-02 20:17:46,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:46,769 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:17:46,877 WARN L230 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_38e4359f-544a-47b5-a327-568a680f1296/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-11-02 20:17:46,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:46,918 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:17:46,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46 WrapperNode [2022-11-02 20:17:46,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:46,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:46,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:17:46,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:17:46,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:46,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,001 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 818 [2022-11-02 20:17:47,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:47,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:17:47,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:17:47,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:17:47,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:17:47,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:17:47,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:17:47,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:17:47,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (1/1) ... [2022-11-02 20:17:47,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:47,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:17:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:17:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-02 20:17:47,190 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-02 20:17:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:17:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-02 20:17:47,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-02 20:17:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 20:17:47,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 20:17:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-02 20:17:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-02 20:17:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 20:17:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 20:17:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 20:17:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 20:17:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-02 20:17:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-02 20:17:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 20:17:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 20:17:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 20:17:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 20:17:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 20:17:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 20:17:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 20:17:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 20:17:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 20:17:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 20:17:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 20:17:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 20:17:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 20:17:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 20:17:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 20:17:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 20:17:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 20:17:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 20:17:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 20:17:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 20:17:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 20:17:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 20:17:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 20:17:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 20:17:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:17:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-02 20:17:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-02 20:17:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 20:17:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 20:17:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 20:17:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 20:17:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 20:17:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 20:17:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-02 20:17:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-02 20:17:47,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:17:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:17:47,204 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 20:17:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 20:17:47,423 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:17:47,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:17:48,867 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:17:48,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:17:48,892 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:17:48,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:48 BoogieIcfgContainer [2022-11-02 20:17:48,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:17:48,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:17:48,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:17:48,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:17:48,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:17:46" (1/3) ... [2022-11-02 20:17:48,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ad4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:48, skipping insertion in model container [2022-11-02 20:17:48,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:46" (2/3) ... [2022-11-02 20:17:48,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ad4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:48, skipping insertion in model container [2022-11-02 20:17:48,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:48" (3/3) ... [2022-11-02 20:17:48,907 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2022-11-02 20:17:48,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:17:48,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:17:49,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:17:49,015 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;@41c14993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:17:49,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:17:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-02 20:17:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 20:17:49,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:49,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:49,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash -525274672, now seen corresponding path program 1 times [2022-11-02 20:17:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:49,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214047142] [2022-11-02 20:17:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:49,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:17:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:17:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:17:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:17:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 20:17:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:17:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:17:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:17:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:17:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:17:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:50,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214047142] [2022-11-02 20:17:50,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214047142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837563197] [2022-11-02 20:17:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:50,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:50,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:50,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:17:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:17:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:17:50,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:50,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837563197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:50,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:50,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-02 20:17:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131680297] [2022-11-02 20:17:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:17:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:50,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:17:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:17:50,677 INFO L87 Difference]: Start difference. First operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:50,780 INFO L93 Difference]: Finished difference Result 1162 states and 1957 transitions. [2022-11-02 20:17:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:17:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-02 20:17:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:50,800 INFO L225 Difference]: With dead ends: 1162 [2022-11-02 20:17:50,801 INFO L226 Difference]: Without dead ends: 582 [2022-11-02 20:17:50,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:17:50,816 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:50,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:17:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-02 20:17:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-02 20:17:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 458 states have (on average 1.6746724890829694) internal successors, (767), 474 states have internal predecessors, (767), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-02 20:17:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 964 transitions. [2022-11-02 20:17:50,958 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 964 transitions. Word has length 114 [2022-11-02 20:17:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:50,963 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 964 transitions. [2022-11-02 20:17:50,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 964 transitions. [2022-11-02 20:17:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 20:17:50,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:50,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:51,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:51,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:17:51,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash 281689968, now seen corresponding path program 1 times [2022-11-02 20:17:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:51,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317844527] [2022-11-02 20:17:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:17:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:17:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:17:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:17:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 20:17:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:17:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:17:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:17:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:17:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:17:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:51,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317844527] [2022-11-02 20:17:51,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317844527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22008070] [2022-11-02 20:17:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:51,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:51,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:51,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:51,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:17:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:52,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:17:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:17:52,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22008070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:52,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:52,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-02 20:17:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595302204] [2022-11-02 20:17:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:52,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:52,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:17:52,168 INFO L87 Difference]: Start difference. First operand 582 states and 964 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:52,377 INFO L93 Difference]: Finished difference Result 1701 states and 2863 transitions. [2022-11-02 20:17:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:52,377 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), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-02 20:17:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:52,387 INFO L225 Difference]: With dead ends: 1701 [2022-11-02 20:17:52,387 INFO L226 Difference]: Without dead ends: 1139 [2022-11-02 20:17:52,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:17:52,392 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 963 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1994 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:17:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-02 20:17:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1130. [2022-11-02 20:17:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 896 states have (on average 1.6852678571428572) internal successors, (1510), 925 states have internal predecessors, (1510), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-11-02 20:17:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1894 transitions. [2022-11-02 20:17:52,480 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1894 transitions. Word has length 114 [2022-11-02 20:17:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:52,481 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1894 transitions. [2022-11-02 20:17:52,481 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), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1894 transitions. [2022-11-02 20:17:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 20:17:52,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:52,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:52,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:52,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:52,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash 6930354, now seen corresponding path program 1 times [2022-11-02 20:17:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324310303] [2022-11-02 20:17:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:17:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:17:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:17:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:17:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 20:17:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:17:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:17:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:17:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:17:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:17:53,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324310303] [2022-11-02 20:17:53,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324310303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515822639] [2022-11-02 20:17:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:53,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:53,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:17:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:53,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:17:53,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:17:53,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:53,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515822639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:53,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:53,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-02 20:17:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919499831] [2022-11-02 20:17:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:53,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:53,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:53,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:17:53,645 INFO L87 Difference]: Start difference. First operand 1130 states and 1894 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:53,859 INFO L93 Difference]: Finished difference Result 2261 states and 3796 transitions. [2022-11-02 20:17:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-02 20:17:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:53,875 INFO L225 Difference]: With dead ends: 2261 [2022-11-02 20:17:53,875 INFO L226 Difference]: Without dead ends: 1139 [2022-11-02 20:17:53,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:17:53,888 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 26 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:53,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2838 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:17:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-02 20:17:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2022-11-02 20:17:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 904 states have (on average 1.6858407079646018) internal successors, (1524), 933 states have internal predecessors, (1524), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-11-02 20:17:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1908 transitions. [2022-11-02 20:17:53,978 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1908 transitions. Word has length 114 [2022-11-02 20:17:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:53,979 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1908 transitions. [2022-11-02 20:17:53,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1908 transitions. [2022-11-02 20:17:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 20:17:53,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:53,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:54,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:54,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:17:54,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2024156388, now seen corresponding path program 1 times [2022-11-02 20:17:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:54,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438507391] [2022-11-02 20:17:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:54,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:17:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 20:17:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:17:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:17:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:17:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 20:17:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 20:17:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:17:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:17:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:17:54,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:54,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438507391] [2022-11-02 20:17:54,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438507391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:54,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282314430] [2022-11-02 20:17:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:54,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:54,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:54,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:54,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:17:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:17:55,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:17:55,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:55,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282314430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:55,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:55,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-02 20:17:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60153684] [2022-11-02 20:17:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:17:55,253 INFO L87 Difference]: Start difference. First operand 1139 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:55,609 INFO L93 Difference]: Finished difference Result 2313 states and 3891 transitions. [2022-11-02 20:17:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:55,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-11-02 20:17:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:55,629 INFO L225 Difference]: With dead ends: 2313 [2022-11-02 20:17:55,629 INFO L226 Difference]: Without dead ends: 1184 [2022-11-02 20:17:55,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:17:55,643 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 170 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:55,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2682 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:17:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-11-02 20:17:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2022-11-02 20:17:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 948 states have (on average 1.6962025316455696) internal successors, (1608), 977 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-11-02 20:17:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1992 transitions. [2022-11-02 20:17:55,717 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1992 transitions. Word has length 116 [2022-11-02 20:17:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:55,718 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1992 transitions. [2022-11-02 20:17:55,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1992 transitions. [2022-11-02 20:17:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 20:17:55,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:55,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:55,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:17:55,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:55,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1811366008, now seen corresponding path program 1 times [2022-11-02 20:17:55,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336144031] [2022-11-02 20:17:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:55,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:17:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:17:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:17:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:17:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:17:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:17:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 20:17:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:17:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 20:17:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:17:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:56,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336144031] [2022-11-02 20:17:56,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336144031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:56,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401907692] [2022-11-02 20:17:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:56,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:56,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:17:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:56,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:17:56,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:17:57,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:57,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401907692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:57,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:57,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:17:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984780064] [2022-11-02 20:17:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:57,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:17:57,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:17:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:17:57,039 INFO L87 Difference]: Start difference. First operand 1184 states and 1992 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:17:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:57,265 INFO L93 Difference]: Finished difference Result 2407 states and 4053 transitions. [2022-11-02 20:17:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:57,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2022-11-02 20:17:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:57,275 INFO L225 Difference]: With dead ends: 2407 [2022-11-02 20:17:57,276 INFO L226 Difference]: Without dead ends: 1233 [2022-11-02 20:17:57,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:17:57,287 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 118 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:57,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5635 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:17:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-11-02 20:17:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1197. [2022-11-02 20:17:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-11-02 20:17:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2022-11-02 20:17:57,382 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 118 [2022-11-02 20:17:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:57,382 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2022-11-02 20:17:57,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:17:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2022-11-02 20:17:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 20:17:57,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:57,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:57,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:57,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:57,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash 127341011, now seen corresponding path program 1 times [2022-11-02 20:17:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:57,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624690325] [2022-11-02 20:17:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:17:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:17:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:17:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:17:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:17:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:17:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:17:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:17:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:17:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:17:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624690325] [2022-11-02 20:17:58,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624690325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832596202] [2022-11-02 20:17:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:58,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:58,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:58,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:58,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:17:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:58,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:17:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:17:58,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:58,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832596202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:58,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:58,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:17:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135375925] [2022-11-02 20:17:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:58,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:17:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:17:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:17:58,459 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:17:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:58,656 INFO L93 Difference]: Finished difference Result 2427 states and 4084 transitions. [2022-11-02 20:17:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-11-02 20:17:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:58,665 INFO L225 Difference]: With dead ends: 2427 [2022-11-02 20:17:58,665 INFO L226 Difference]: Without dead ends: 1242 [2022-11-02 20:17:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:17:58,674 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 129 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5640 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:17:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-11-02 20:17:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1197. [2022-11-02 20:17:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-11-02 20:17:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2022-11-02 20:17:58,732 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 119 [2022-11-02 20:17:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:58,732 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2022-11-02 20:17:58,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:17:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2022-11-02 20:17:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 20:17:58,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:58,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:58,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:58,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:17:58,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1740207191, now seen corresponding path program 1 times [2022-11-02 20:17:58,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:58,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263725493] [2022-11-02 20:17:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:17:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:17:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:17:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:17:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:17:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:17:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:17:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:17:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:17:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:17:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:59,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263725493] [2022-11-02 20:17:59,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263725493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:17:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000633702] [2022-11-02 20:17:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:59,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:59,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:17:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:17:59,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:17:59,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:59,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000633702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:59,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:17:59,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-02 20:17:59,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371349177] [2022-11-02 20:17:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:17:59,604 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:59,708 INFO L93 Difference]: Finished difference Result 2399 states and 4035 transitions. [2022-11-02 20:17:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-11-02 20:17:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:59,717 INFO L225 Difference]: With dead ends: 2399 [2022-11-02 20:17:59,717 INFO L226 Difference]: Without dead ends: 1208 [2022-11-02 20:17:59,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:17:59,739 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 20 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:59,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2839 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:17:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-11-02 20:17:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2022-11-02 20:17:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:17:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-11-02 20:17:59,795 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 119 [2022-11-02 20:17:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:59,795 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-11-02 20:17:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:17:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-11-02 20:17:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:17:59,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:59,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:59,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:18:00,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash -107080124, now seen corresponding path program 1 times [2022-11-02 20:18:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:00,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349621850] [2022-11-02 20:18:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:18:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:18:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:18:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:18:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:18:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:18:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:18:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:18:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:00,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:00,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349621850] [2022-11-02 20:18:00,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349621850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:00,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544503229] [2022-11-02 20:18:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:00,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:00,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:18:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:18:00,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:18:00,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:00,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544503229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:00,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:00,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:18:00,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379822164] [2022-11-02 20:18:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:00,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:00,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:00,843 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:01,020 INFO L93 Difference]: Finished difference Result 2436 states and 4079 transitions. [2022-11-02 20:18:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:18:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-11-02 20:18:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:01,029 INFO L225 Difference]: With dead ends: 2436 [2022-11-02 20:18:01,030 INFO L226 Difference]: Without dead ends: 1253 [2022-11-02 20:18:01,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:18:01,037 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 140 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:01,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5594 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-11-02 20:18:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1206. [2022-11-02 20:18:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:18:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-11-02 20:18:01,090 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2022-11-02 20:18:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:01,090 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-11-02 20:18:01,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-11-02 20:18:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:18:01,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:01,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:01,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:01,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:01,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash -35089662, now seen corresponding path program 1 times [2022-11-02 20:18:01,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:01,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240885836] [2022-11-02 20:18:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:01,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:18:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:18:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:18:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:18:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:18:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:18:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:18:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:18:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:01,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:01,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240885836] [2022-11-02 20:18:01,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240885836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:01,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505629832] [2022-11-02 20:18:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:01,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:01,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:01,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:18:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:02,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:18:02,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:18:02,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:02,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505629832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:02,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:02,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:18:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886725628] [2022-11-02 20:18:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:18:02,253 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:02,509 INFO L93 Difference]: Finished difference Result 2439 states and 4083 transitions. [2022-11-02 20:18:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:18:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-11-02 20:18:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:02,520 INFO L225 Difference]: With dead ends: 2439 [2022-11-02 20:18:02,521 INFO L226 Difference]: Without dead ends: 1256 [2022-11-02 20:18:02,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:18:02,531 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 140 mSDsluCounter, 5556 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:02,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6500 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-02 20:18:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1206. [2022-11-02 20:18:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:18:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-11-02 20:18:02,592 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2022-11-02 20:18:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:02,593 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-11-02 20:18:02,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-11-02 20:18:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-02 20:18:02,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:02,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:02,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:02,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:02,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 996880591, now seen corresponding path program 1 times [2022-11-02 20:18:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:02,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775444272] [2022-11-02 20:18:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:18:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 20:18:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:18:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:18:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:18:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:18:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:18:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:18:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:03,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775444272] [2022-11-02 20:18:03,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775444272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768599609] [2022-11-02 20:18:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:03,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:03,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:03,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:18:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:03,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:18:03,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:18:03,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768599609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:03,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:03,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:18:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104721283] [2022-11-02 20:18:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:18:03,737 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:03,984 INFO L93 Difference]: Finished difference Result 2439 states and 4083 transitions. [2022-11-02 20:18:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:18:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-02 20:18:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:03,993 INFO L225 Difference]: With dead ends: 2439 [2022-11-02 20:18:03,993 INFO L226 Difference]: Without dead ends: 1256 [2022-11-02 20:18:04,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:18:04,001 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 150 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6488 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-02 20:18:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1206. [2022-11-02 20:18:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:18:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-11-02 20:18:04,058 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 121 [2022-11-02 20:18:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-11-02 20:18:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-11-02 20:18:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 20:18:04,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:04,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:04,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:04,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:18:04,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1842820803, now seen corresponding path program 1 times [2022-11-02 20:18:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:04,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902579974] [2022-11-02 20:18:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:18:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:18:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:18:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:18:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:18:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:18:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:18:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:04,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:04,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902579974] [2022-11-02 20:18:04,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902579974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:04,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535991886] [2022-11-02 20:18:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:04,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:04,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:04,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:18:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:18:05,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:18:05,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:05,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535991886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:05,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:05,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:18:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118111958] [2022-11-02 20:18:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:05,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:18:05,158 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:05,394 INFO L93 Difference]: Finished difference Result 2430 states and 4068 transitions. [2022-11-02 20:18:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:18:05,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-11-02 20:18:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:05,404 INFO L225 Difference]: With dead ends: 2430 [2022-11-02 20:18:05,404 INFO L226 Difference]: Without dead ends: 1247 [2022-11-02 20:18:05,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:18:05,412 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 160 mSDsluCounter, 5532 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6476 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6476 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-11-02 20:18:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1206. [2022-11-02 20:18:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:18:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-11-02 20:18:05,473 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 122 [2022-11-02 20:18:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:05,473 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-11-02 20:18:05,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-11-02 20:18:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 20:18:05,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:05,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:05,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:05,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:05,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1459442657, now seen corresponding path program 1 times [2022-11-02 20:18:05,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:05,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072894103] [2022-11-02 20:18:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:18:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:18:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:18:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:18:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:18:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:18:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:18:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:18:05,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072894103] [2022-11-02 20:18:05,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072894103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823174247] [2022-11-02 20:18:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:05,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:05,959 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:05,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:18:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:18:06,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:18:06,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:06,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823174247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:06,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:06,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-02 20:18:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370235070] [2022-11-02 20:18:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:06,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:18:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:18:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:06,300 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:06,394 INFO L93 Difference]: Finished difference Result 2378 states and 3986 transitions. [2022-11-02 20:18:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:18:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-02 20:18:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:06,402 INFO L225 Difference]: With dead ends: 2378 [2022-11-02 20:18:06,403 INFO L226 Difference]: Without dead ends: 1206 [2022-11-02 20:18:06,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:18:06,409 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 35 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:06,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2837 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-11-02 20:18:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2022-11-02 20:18:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6801242236024845) internal successors, (1623), 997 states have internal predecessors, (1623), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-11-02 20:18:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2012 transitions. [2022-11-02 20:18:06,454 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2012 transitions. Word has length 122 [2022-11-02 20:18:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:06,455 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2012 transitions. [2022-11-02 20:18:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2012 transitions. [2022-11-02 20:18:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:18:06,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:06,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:06,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:06,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:18:06,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -563421386, now seen corresponding path program 1 times [2022-11-02 20:18:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146393474] [2022-11-02 20:18:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:18:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 20:18:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:18:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:18:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:18:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:18:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:18:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:18:07,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:07,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146393474] [2022-11-02 20:18:07,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146393474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:07,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981976354] [2022-11-02 20:18:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:07,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:07,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:07,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:07,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:18:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:07,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:18:07,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:18:07,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:07,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981976354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:07,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:07,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-02 20:18:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011125527] [2022-11-02 20:18:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:18:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:18:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:18:07,359 INFO L87 Difference]: Start difference. First operand 1206 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:07,577 INFO L93 Difference]: Finished difference Result 2374 states and 3977 transitions. [2022-11-02 20:18:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:18:07,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-02 20:18:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:07,587 INFO L225 Difference]: With dead ends: 2374 [2022-11-02 20:18:07,587 INFO L226 Difference]: Without dead ends: 1260 [2022-11-02 20:18:07,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:07,593 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 241 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:07,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2671 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-02 20:18:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1251. [2022-11-02 20:18:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1010 states have (on average 1.69009900990099) internal successors, (1707), 1041 states have internal predecessors, (1707), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-11-02 20:18:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 2095 transitions. [2022-11-02 20:18:07,652 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 2095 transitions. Word has length 123 [2022-11-02 20:18:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:07,652 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 2095 transitions. [2022-11-02 20:18:07,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 2095 transitions. [2022-11-02 20:18:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 20:18:07,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:07,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:07,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-02 20:18:07,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:07,886 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1187945535, now seen corresponding path program 1 times [2022-11-02 20:18:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:07,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302173569] [2022-11-02 20:18:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:18:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:18:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 20:18:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:18:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:18:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:18:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:18:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:18:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:08,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302173569] [2022-11-02 20:18:08,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302173569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298800209] [2022-11-02 20:18:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:08,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:08,256 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:08,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:18:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:18:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:08,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:08,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298800209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:08,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:08,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-02 20:18:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299625335] [2022-11-02 20:18:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:18:08,653 INFO L87 Difference]: Start difference. First operand 1251 states and 2095 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:08,819 INFO L93 Difference]: Finished difference Result 2411 states and 4029 transitions. [2022-11-02 20:18:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:18:08,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2022-11-02 20:18:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:08,828 INFO L225 Difference]: With dead ends: 2411 [2022-11-02 20:18:08,828 INFO L226 Difference]: Without dead ends: 1297 [2022-11-02 20:18:08,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:18:08,837 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 115 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5588 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:08,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5588 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-11-02 20:18:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1264. [2022-11-02 20:18:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-11-02 20:18:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-11-02 20:18:08,959 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 124 [2022-11-02 20:18:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:08,960 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-11-02 20:18:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-11-02 20:18:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:18:08,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:08,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:09,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:18:09,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2026594256, now seen corresponding path program 1 times [2022-11-02 20:18:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:09,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274852042] [2022-11-02 20:18:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:18:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:18:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:18:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:18:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:18:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:18:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:18:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:18:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274852042] [2022-11-02 20:18:09,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274852042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:09,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125353275] [2022-11-02 20:18:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:09,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:09,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:09,575 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:09,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:18:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:18:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:10,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:10,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125353275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:10,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:10,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-02 20:18:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618976764] [2022-11-02 20:18:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:10,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:10,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:18:10,006 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:10,219 INFO L93 Difference]: Finished difference Result 2420 states and 4043 transitions. [2022-11-02 20:18:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:18:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-11-02 20:18:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:10,230 INFO L225 Difference]: With dead ends: 2420 [2022-11-02 20:18:10,230 INFO L226 Difference]: Without dead ends: 1306 [2022-11-02 20:18:10,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:18:10,239 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 126 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5576 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:10,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5576 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-11-02 20:18:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1264. [2022-11-02 20:18:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-11-02 20:18:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-11-02 20:18:10,295 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2022-11-02 20:18:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:10,296 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-11-02 20:18:10,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-11-02 20:18:10,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:18:10,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:10,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:10,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:10,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:18:10,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash 289412016, now seen corresponding path program 1 times [2022-11-02 20:18:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452006190] [2022-11-02 20:18:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:18:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:18:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:18:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:18:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:18:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:18:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:18:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:18:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452006190] [2022-11-02 20:18:10,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452006190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027721635] [2022-11-02 20:18:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:10,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:18:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:11,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:18:11,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:11,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:11,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027721635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:11,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:11,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-02 20:18:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049397411] [2022-11-02 20:18:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:11,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:18:11,315 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:11,580 INFO L93 Difference]: Finished difference Result 2423 states and 4046 transitions. [2022-11-02 20:18:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:18:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-11-02 20:18:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:11,589 INFO L225 Difference]: With dead ends: 2423 [2022-11-02 20:18:11,590 INFO L226 Difference]: Without dead ends: 1309 [2022-11-02 20:18:11,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:18:11,596 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 138 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:11,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6478 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:18:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-02 20:18:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1264. [2022-11-02 20:18:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-11-02 20:18:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-11-02 20:18:11,649 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2022-11-02 20:18:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:11,650 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-11-02 20:18:11,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-11-02 20:18:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:18:11,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:11,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:11,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:11,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:18:11,882 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1729460634, now seen corresponding path program 1 times [2022-11-02 20:18:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:11,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598642067] [2022-11-02 20:18:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:18:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:18:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:18:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:18:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:18:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:18:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:18:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:18:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:18:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:12,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598642067] [2022-11-02 20:18:12,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598642067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:12,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975791478] [2022-11-02 20:18:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:12,266 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:12,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:18:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:18:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:18:12,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975791478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:12,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-02 20:18:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299878353] [2022-11-02 20:18:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:18:12,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:18:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:12,661 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:12,743 INFO L93 Difference]: Finished difference Result 2454 states and 4109 transitions. [2022-11-02 20:18:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:18:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-02 20:18:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:12,751 INFO L225 Difference]: With dead ends: 2454 [2022-11-02 20:18:12,751 INFO L226 Difference]: Without dead ends: 1264 [2022-11-02 20:18:12,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:18:12,757 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 10 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2839 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-11-02 20:18:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2022-11-02 20:18:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-11-02 20:18:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2022-11-02 20:18:12,804 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 125 [2022-11-02 20:18:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:12,804 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2022-11-02 20:18:12,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2022-11-02 20:18:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 20:18:12,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:12,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:12,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:18:13,025 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 978607357, now seen corresponding path program 1 times [2022-11-02 20:18:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:13,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528583638] [2022-11-02 20:18:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:18:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:18:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:18:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 20:18:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:18:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:18:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:18:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:18:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528583638] [2022-11-02 20:18:13,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528583638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113482348] [2022-11-02 20:18:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:13,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:18:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:18:13,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:18:13,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:13,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113482348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:13,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:13,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-02 20:18:13,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445133030] [2022-11-02 20:18:13,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:13,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:13,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:13,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:18:13,801 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:14,052 INFO L93 Difference]: Finished difference Result 2414 states and 4029 transitions. [2022-11-02 20:18:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:18:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2022-11-02 20:18:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:14,060 INFO L225 Difference]: With dead ends: 2414 [2022-11-02 20:18:14,060 INFO L226 Difference]: Without dead ends: 1300 [2022-11-02 20:18:14,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:18:14,066 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 148 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:14,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6448 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-11-02 20:18:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1264. [2022-11-02 20:18:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-11-02 20:18:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2022-11-02 20:18:14,155 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 126 [2022-11-02 20:18:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:14,156 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2022-11-02 20:18:14,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2022-11-02 20:18:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 20:18:14,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:14,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:14,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:14,374 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1328556693, now seen corresponding path program 1 times [2022-11-02 20:18:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:14,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691383513] [2022-11-02 20:18:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:18:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:18:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:18:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:18:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:18:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:18:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:18:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 20:18:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 20:18:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:18:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691383513] [2022-11-02 20:18:14,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691383513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138636497] [2022-11-02 20:18:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:14,749 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:14,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:18:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:18:15,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:18:15,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:15,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138636497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:15,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:15,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2022-11-02 20:18:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687127644] [2022-11-02 20:18:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:15,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:18:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:18:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:18:15,073 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:15,151 INFO L93 Difference]: Finished difference Result 2505 states and 4198 transitions. [2022-11-02 20:18:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:18:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-11-02 20:18:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:15,170 INFO L225 Difference]: With dead ends: 2505 [2022-11-02 20:18:15,170 INFO L226 Difference]: Without dead ends: 1229 [2022-11-02 20:18:15,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:15,176 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 13 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:15,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2838 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-11-02 20:18:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2022-11-02 20:18:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 988 states have (on average 1.6720647773279351) internal successors, (1652), 1019 states have internal predecessors, (1652), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-11-02 20:18:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2040 transitions. [2022-11-02 20:18:15,241 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2040 transitions. Word has length 127 [2022-11-02 20:18:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2040 transitions. [2022-11-02 20:18:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2040 transitions. [2022-11-02 20:18:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 20:18:15,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:15,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:15,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:15,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:15,464 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1824623296, now seen corresponding path program 1 times [2022-11-02 20:18:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:15,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144447031] [2022-11-02 20:18:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:18:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:18:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:18:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:18:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 20:18:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:18:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:18:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:18:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:18:15,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:15,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144447031] [2022-11-02 20:18:15,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144447031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:15,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461515682] [2022-11-02 20:18:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:15,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:15,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:15,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:18:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:18:16,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:18:16,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:16,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461515682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:16,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:16,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2022-11-02 20:18:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638878871] [2022-11-02 20:18:16,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:16,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:18:16,219 INFO L87 Difference]: Start difference. First operand 1229 states and 2040 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:16,360 INFO L93 Difference]: Finished difference Result 2464 states and 4088 transitions. [2022-11-02 20:18:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:18:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-11-02 20:18:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:16,367 INFO L225 Difference]: With dead ends: 2464 [2022-11-02 20:18:16,367 INFO L226 Difference]: Without dead ends: 1252 [2022-11-02 20:18:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:16,373 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 138 mSDsluCounter, 4623 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:16,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5582 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:18:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-02 20:18:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1222. [2022-11-02 20:18:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 981 states have (on average 1.6676860346585116) internal successors, (1636), 1012 states have internal predecessors, (1636), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-11-02 20:18:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2024 transitions. [2022-11-02 20:18:16,418 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2024 transitions. Word has length 128 [2022-11-02 20:18:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:16,419 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 2024 transitions. [2022-11-02 20:18:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2024 transitions. [2022-11-02 20:18:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:18:16,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:16,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:16,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:16,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e4359f-544a-47b5-a327-568a680f1296/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:16,638 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1668543117, now seen corresponding path program 1 times [2022-11-02 20:18:16,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:16,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864761456] [2022-11-02 20:18:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:16,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:18:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:18:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:18:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:18:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:18:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:18:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:18:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:18:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:18:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:17,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864761456] [2022-11-02 20:18:17,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864761456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:17,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:17,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:18:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314907914] [2022-11-02 20:18:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:18:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:17,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:18:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:17,021 INFO L87 Difference]: Start difference. First operand 1222 states and 2024 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:23,977 INFO L93 Difference]: Finished difference Result 2877 states and 4790 transitions. [2022-11-02 20:18:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:18:23,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2022-11-02 20:18:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:23,989 INFO L225 Difference]: With dead ends: 2877 [2022-11-02 20:18:23,989 INFO L226 Difference]: Without dead ends: 1757 [2022-11-02 20:18:23,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:18:23,995 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1556 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:23,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 3230 Invalid, 5088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [462 Valid, 4626 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 20:18:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-11-02 20:18:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1284. [2022-11-02 20:18:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1029 states have (on average 1.6588921282798834) internal successors, (1707), 1060 states have internal predecessors, (1707), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2022-11-02 20:18:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 2128 transitions. [2022-11-02 20:18:24,377 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 2128 transitions. Word has length 129 [2022-11-02 20:18:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 2128 transitions. [2022-11-02 20:18:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-02 20:18:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 2128 transitions. [2022-11-02 20:18:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:18:24,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:24,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:18:24,385 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1029484769, now seen corresponding path program 1 times [2022-11-02 20:18:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:24,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706772014] [2022-11-02 20:18:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:18:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:18:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:18:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:18:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:18:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:18:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:18:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:18:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:18:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:24,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706772014] [2022-11-02 20:18:24,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706772014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:24,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:24,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:18:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32130066] [2022-11-02 20:18:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:18:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:18:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:18:24,692 INFO L87 Difference]: Start difference. First operand 1284 states and 2128 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:29,837 INFO L93 Difference]: Finished difference Result 2950 states and 4915 transitions. [2022-11-02 20:18:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:18:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-02 20:18:29,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:29,846 INFO L225 Difference]: With dead ends: 2950 [2022-11-02 20:18:29,846 INFO L226 Difference]: Without dead ends: 1674 [2022-11-02 20:18:29,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:18:29,852 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1482 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:29,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1967 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 20:18:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-02 20:18:30,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1256. [2022-11-02 20:18:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1004 states have (on average 1.654382470119522) internal successors, (1661), 1033 states have internal predecessors, (1661), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2022-11-02 20:18:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2078 transitions. [2022-11-02 20:18:30,124 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2078 transitions. Word has length 129 [2022-11-02 20:18:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:30,125 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 2078 transitions. [2022-11-02 20:18:30,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:18:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2078 transitions. [2022-11-02 20:18:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:18:30,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:30,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:18:30,130 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash -833986604, now seen corresponding path program 1 times [2022-11-02 20:18:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:30,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101405832] [2022-11-02 20:18:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:18:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:18:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:18:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:18:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:18:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:18:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:18:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:18:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:18:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101405832] [2022-11-02 20:18:30,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101405832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:30,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:30,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:18:30,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233327818] [2022-11-02 20:18:30,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:18:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:18:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:18:30,459 INFO L87 Difference]: Start difference. First operand 1256 states and 2078 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:18:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:40,139 INFO L93 Difference]: Finished difference Result 4267 states and 7347 transitions. [2022-11-02 20:18:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:18:40,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2022-11-02 20:18:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:40,159 INFO L225 Difference]: With dead ends: 4267 [2022-11-02 20:18:40,159 INFO L226 Difference]: Without dead ends: 3099 [2022-11-02 20:18:40,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:40,169 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 4420 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 1510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1510 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:40,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 2698 Invalid, 4462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1510 Valid, 2952 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-02 20:18:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-11-02 20:18:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2379. [2022-11-02 20:18:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 1898 states have (on average 1.6506849315068493) internal successors, (3133), 1954 states have internal predecessors, (3133), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (443), 376 states have call predecessors, (443), 377 states have call successors, (443) [2022-11-02 20:18:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3959 transitions. [2022-11-02 20:18:40,784 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3959 transitions. Word has length 130 [2022-11-02 20:18:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:40,785 INFO L495 AbstractCegarLoop]: Abstraction has 2379 states and 3959 transitions. [2022-11-02 20:18:40,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:18:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3959 transitions. [2022-11-02 20:18:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-02 20:18:40,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:40,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:18:40,791 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 783805981, now seen corresponding path program 1 times [2022-11-02 20:18:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:40,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905320219] [2022-11-02 20:18:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:18:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:18:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:18:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:18:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:18:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:18:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:18:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:18:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:18:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:18:41,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905320219] [2022-11-02 20:18:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905320219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:41,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:41,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:18:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206501757] [2022-11-02 20:18:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:41,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:18:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:18:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:18:41,088 INFO L87 Difference]: Start difference. First operand 2379 states and 3959 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:18:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:52,570 INFO L93 Difference]: Finished difference Result 8258 states and 14477 transitions. [2022-11-02 20:18:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:18:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2022-11-02 20:18:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:52,610 INFO L225 Difference]: With dead ends: 8258 [2022-11-02 20:18:52,610 INFO L226 Difference]: Without dead ends: 5967 [2022-11-02 20:18:52,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:52,628 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 4438 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 1501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4449 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:52,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4449 Valid, 2747 Invalid, 4470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1501 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-02 20:18:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2022-11-02 20:18:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 4635. [2022-11-02 20:18:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 3694 states have (on average 1.6445587439090417) internal successors, (6075), 3804 states have internal predecessors, (6075), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (944), 740 states have call predecessors, (944), 741 states have call successors, (944) [2022-11-02 20:18:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 7770 transitions. [2022-11-02 20:18:53,713 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 7770 transitions. Word has length 131 [2022-11-02 20:18:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:53,714 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 7770 transitions. [2022-11-02 20:18:53,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:18:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 7770 transitions. [2022-11-02 20:18:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-02 20:18:53,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:53,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:53,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:18:53,720 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:53,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1806932081, now seen corresponding path program 1 times [2022-11-02 20:18:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:53,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674800903] [2022-11-02 20:18:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:53,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:18:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:18:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:18:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:18:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:18:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:18:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:18:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:18:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:18:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-02 20:18:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:18:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:54,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674800903] [2022-11-02 20:18:54,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674800903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:18:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024467977] [2022-11-02 20:18:54,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:18:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:18:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:18:54,029 INFO L87 Difference]: Start difference. First operand 4635 states and 7770 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:19:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:06,766 INFO L93 Difference]: Finished difference Result 16284 states and 29434 transitions. [2022-11-02 20:19:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:19:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2022-11-02 20:19:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:06,843 INFO L225 Difference]: With dead ends: 16284 [2022-11-02 20:19:06,843 INFO L226 Difference]: Without dead ends: 11737 [2022-11-02 20:19:06,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:06,883 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 4477 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2979 mSolverCounterSat, 1513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1513 IncrementalHoareTripleChecker+Valid, 2979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 2780 Invalid, 4492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1513 Valid, 2979 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-02 20:19:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2022-11-02 20:19:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 9157. [2022-11-02 20:19:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9157 states, 7294 states have (on average 1.6370989854675075) internal successors, (11941), 7512 states have internal predecessors, (11941), 1489 states have call successors, (1489), 366 states have call predecessors, (1489), 373 states have return successors, (2091), 1470 states have call predecessors, (2091), 1471 states have call successors, (2091) [2022-11-02 20:19:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9157 states to 9157 states and 15521 transitions. [2022-11-02 20:19:09,211 INFO L78 Accepts]: Start accepts. Automaton has 9157 states and 15521 transitions. Word has length 132 [2022-11-02 20:19:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:09,211 INFO L495 AbstractCegarLoop]: Abstraction has 9157 states and 15521 transitions. [2022-11-02 20:19:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:19:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9157 states and 15521 transitions. [2022-11-02 20:19:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-02 20:19:09,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:09,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:09,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:19:09,217 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1718134024, now seen corresponding path program 1 times [2022-11-02 20:19:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:09,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816043280] [2022-11-02 20:19:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:09,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:19:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:19:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:19:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:19:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:19:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:19:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:19:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:19:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:19:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:19:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:09,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816043280] [2022-11-02 20:19:09,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816043280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:09,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:09,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:19:09,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923321769] [2022-11-02 20:19:09,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:09,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:19:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:19:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:19:09,534 INFO L87 Difference]: Start difference. First operand 9157 states and 15521 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:19:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:24,960 INFO L93 Difference]: Finished difference Result 32380 states and 61493 transitions. [2022-11-02 20:19:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:19:24,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2022-11-02 20:19:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:25,128 INFO L225 Difference]: With dead ends: 32380 [2022-11-02 20:19:25,128 INFO L226 Difference]: Without dead ends: 23311 [2022-11-02 20:19:25,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:25,238 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 4483 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 3003 mSolverCounterSat, 1531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1531 IncrementalHoareTripleChecker+Valid, 3003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:25,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4496 Valid, 2880 Invalid, 4534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1531 Valid, 3003 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-02 20:19:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23311 states. [2022-11-02 20:19:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23311 to 18211. [2022-11-02 20:19:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 14502 states have (on average 1.6289477313474003) internal successors, (23623), 14936 states have internal predecessors, (23623), 2967 states have call successors, (2967), 726 states have call predecessors, (2967), 741 states have return successors, (4834), 2932 states have call predecessors, (4834), 2933 states have call successors, (4834) [2022-11-02 20:19:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 31424 transitions. [2022-11-02 20:19:29,970 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 31424 transitions. Word has length 133 [2022-11-02 20:19:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:29,970 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 31424 transitions. [2022-11-02 20:19:29,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:19:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 31424 transitions. [2022-11-02 20:19:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:19:29,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:29,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:29,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:19:29,976 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:29,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:29,977 INFO L85 PathProgramCache]: Analyzing trace with hash -168094902, now seen corresponding path program 1 times [2022-11-02 20:19:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:29,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066653582] [2022-11-02 20:19:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:19:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:19:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:19:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:19:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:19:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:19:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:19:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:19:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 20:19:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:19:30,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:30,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066653582] [2022-11-02 20:19:30,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066653582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:30,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:30,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:19:30,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208663756] [2022-11-02 20:19:30,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:30,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:19:30,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:19:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:19:30,312 INFO L87 Difference]: Start difference. First operand 18211 states and 31424 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:19:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:55,740 INFO L93 Difference]: Finished difference Result 64616 states and 132532 transitions. [2022-11-02 20:19:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:19:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2022-11-02 20:19:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:56,406 INFO L225 Difference]: With dead ends: 64616 [2022-11-02 20:19:56,407 INFO L226 Difference]: Without dead ends: 46493 [2022-11-02 20:19:56,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:56,808 INFO L413 NwaCegarLoop]: 1974 mSDtfsCounter, 4529 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 1538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1538 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:56,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4543 Valid, 2896 Invalid, 4561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1538 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-02 20:19:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46493 states. [2022-11-02 20:20:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46493 to 36329. [2022-11-02 20:20:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36329 states, 28926 states have (on average 1.6204452741478255) internal successors, (46873), 29792 states have internal predecessors, (46873), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1477 states have return successors, (11741), 5858 states have call predecessors, (11741), 5859 states have call successors, (11741) [2022-11-02 20:20:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36329 states to 36329 states and 64539 transitions. [2022-11-02 20:20:07,150 INFO L78 Accepts]: Start accepts. Automaton has 36329 states and 64539 transitions. Word has length 134 [2022-11-02 20:20:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:07,150 INFO L495 AbstractCegarLoop]: Abstraction has 36329 states and 64539 transitions. [2022-11-02 20:20:07,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:20:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 36329 states and 64539 transitions. [2022-11-02 20:20:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:20:07,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:07,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:07,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:20:07,157 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -649175160, now seen corresponding path program 1 times [2022-11-02 20:20:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:07,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132743646] [2022-11-02 20:20:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:20:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:20:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:20:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:20:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:20:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:20:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:20:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:20:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:20:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:20:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:20:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:20:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 20:20:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:20:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132743646] [2022-11-02 20:20:07,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132743646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:07,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:07,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:20:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583726441] [2022-11-02 20:20:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:07,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:20:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:20:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:07,571 INFO L87 Difference]: Start difference. First operand 36329 states and 64539 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)