./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS --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 f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 --- 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-4e7fbc6 [2022-11-23 01:45:37,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:45:37,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:45:37,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:45:37,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:45:37,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:45:37,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:45:37,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:45:37,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:45:37,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:45:37,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:45:37,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:45:37,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:45:37,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:45:37,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:45:37,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:45:37,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:45:37,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:45:37,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:45:37,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:45:37,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:45:37,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:45:37,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:45:37,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:45:37,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:45:37,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:45:37,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:45:37,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:45:37,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:45:37,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:45:37,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:45:37,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:45:37,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:45:37,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:45:37,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:45:37,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:45:37,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:45:37,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:45:37,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:45:37,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:45:37,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:45:37,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:45:37,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:45:37,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:45:37,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:45:37,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:45:37,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:45:37,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:45:37,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:45:37,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:45:37,879 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:45:37,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:45:37,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:45:37,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:45:37,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:45:37,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:45:37,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:45:37,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:45:37,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:45:37,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:45:37,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:45:37,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:45:37,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:45:37,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:45:37,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:45:37,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:45:37,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:45:37,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:45:37,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:45:37,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:45:37,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:45:37,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:45:37,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:45:37,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:45:37,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:45:37,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:45:37,885 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4d752ef50871b3af82701ffcd8ca92c2975f63f8274731e1afbb137d2562986 [2022-11-23 01:45:38,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:45:38,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:45:38,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:45:38,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:45:38,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:45:38,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2022-11-23 01:45:41,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:45:41,606 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:45:41,607 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c [2022-11-23 01:45:41,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/data/b8d14012f/9274cb0114c54211b98d60710950aabd/FLAG226a13138 [2022-11-23 01:45:41,638 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/data/b8d14012f/9274cb0114c54211b98d60710950aabd [2022-11-23 01:45:41,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:45:41,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:45:41,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:45:41,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:45:41,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:45:41,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:41" (1/1) ... [2022-11-23 01:45:41,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4b3db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:41, skipping insertion in model container [2022-11-23 01:45:41,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:41" (1/1) ... [2022-11-23 01:45:41,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:45:41,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:45:41,966 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2022-11-23 01:45:42,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:45:42,324 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:45:42,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/sv-benchmarks/c/product-lines/elevator_spec2_product17.cil.c[17414,17427] [2022-11-23 01:45:42,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:45:42,477 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:45:42,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42 WrapperNode [2022-11-23 01:45:42,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:45:42,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:45:42,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:45:42,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:45:42,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,595 INFO L138 Inliner]: procedures = 90, calls = 332, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 802 [2022-11-23 01:45:42,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:45:42,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:45:42,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:45:42,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:45:42,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:45:42,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:45:42,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:45:42,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:45:42,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (1/1) ... [2022-11-23 01:45:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:45:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:45:42,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:45:42,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:45:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:45:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-23 01:45:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-23 01:45:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-23 01:45:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-23 01:45:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 01:45:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 01:45:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 01:45:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 01:45:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 01:45:42,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 01:45:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 01:45:42,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 01:45:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 01:45:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 01:45:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-23 01:45:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-23 01:45:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 01:45:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 01:45:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 01:45:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 01:45:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 01:45:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 01:45:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 01:45:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 01:45:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 01:45:42,788 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 01:45:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 01:45:42,788 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 01:45:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 01:45:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 01:45:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 01:45:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 01:45:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 01:45:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 01:45:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:45:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 01:45:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 01:45:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 01:45:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 01:45:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 01:45:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 01:45:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:45:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:45:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 01:45:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 01:45:43,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:45:43,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:45:44,272 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:45:44,284 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:45:44,284 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 01:45:44,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:45:44 BoogieIcfgContainer [2022-11-23 01:45:44,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:45:44,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:45:44,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:45:44,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:45:44,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:45:41" (1/3) ... [2022-11-23 01:45:44,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241be8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:45:44, skipping insertion in model container [2022-11-23 01:45:44,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:42" (2/3) ... [2022-11-23 01:45:44,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241be8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:45:44, skipping insertion in model container [2022-11-23 01:45:44,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:45:44" (3/3) ... [2022-11-23 01:45:44,295 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2022-11-23 01:45:44,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:45:44,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:45:44,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:45:44,394 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;@40de5dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:45:44,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:45:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-23 01:45:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 01:45:44,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:44,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:44,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1249329355, now seen corresponding path program 1 times [2022-11-23 01:45:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775821149] [2022-11-23 01:45:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:45:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 01:45:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 01:45:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:45:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 01:45:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:45:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:45:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775821149] [2022-11-23 01:45:45,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775821149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:45:45,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:45:45,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:45:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997094650] [2022-11-23 01:45:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:45:45,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:45:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:45:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:45:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:45:45,772 INFO L87 Difference]: Start difference. First operand has 532 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 442 states have internal predecessors, (720), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:45:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:45:56,527 INFO L93 Difference]: Finished difference Result 1504 states and 2610 transitions. [2022-11-23 01:45:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:45:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-23 01:45:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:45:56,571 INFO L225 Difference]: With dead ends: 1504 [2022-11-23 01:45:56,572 INFO L226 Difference]: Without dead ends: 984 [2022-11-23 01:45:56,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:45:56,590 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1786 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 5737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 4943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:45:56,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 2854 Invalid, 5737 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [794 Valid, 4943 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 01:45:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-11-23 01:45:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 526. [2022-11-23 01:45:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 417 states have (on average 1.7026378896882495) internal successors, (710), 436 states have internal predecessors, (710), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-23 01:45:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 881 transitions. [2022-11-23 01:45:56,804 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 881 transitions. Word has length 74 [2022-11-23 01:45:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:45:56,804 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 881 transitions. [2022-11-23 01:45:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:45:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 881 transitions. [2022-11-23 01:45:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 01:45:56,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:45:56,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:45:56,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:45:56,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:45:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:45:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 498321993, now seen corresponding path program 1 times [2022-11-23 01:45:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:45:56,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995643928] [2022-11-23 01:45:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:45:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:45:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:45:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:45:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:45:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:45:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:45:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:45:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:45:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:45:57,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:45:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995643928] [2022-11-23 01:45:57,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995643928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:45:57,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:45:57,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:45:57,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76057815] [2022-11-23 01:45:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:45:57,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:45:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:45:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:45:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:45:57,522 INFO L87 Difference]: Start difference. First operand 526 states and 881 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:46:06,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:46:06,680 INFO L93 Difference]: Finished difference Result 1329 states and 2262 transitions. [2022-11-23 01:46:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:46:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-11-23 01:46:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:46:06,693 INFO L225 Difference]: With dead ends: 1329 [2022-11-23 01:46:06,693 INFO L226 Difference]: Without dead ends: 821 [2022-11-23 01:46:06,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:46:06,697 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1004 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 5654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:46:06,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3587 Invalid, 5654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 01:46:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-23 01:46:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 530. [2022-11-23 01:46:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 420 states have (on average 1.6952380952380952) internal successors, (712), 439 states have internal predecessors, (712), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2022-11-23 01:46:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 885 transitions. [2022-11-23 01:46:06,832 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 885 transitions. Word has length 80 [2022-11-23 01:46:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:46:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 885 transitions. [2022-11-23 01:46:06,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:46:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 885 transitions. [2022-11-23 01:46:06,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 01:46:06,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:46:06,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:46:06,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:46:06,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:46:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:46:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1135044575, now seen corresponding path program 1 times [2022-11-23 01:46:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:46:06,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752140789] [2022-11-23 01:46:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:46:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:46:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:46:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:46:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 01:46:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:46:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 01:46:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:46:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:46:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752140789] [2022-11-23 01:46:07,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752140789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:46:07,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:46:07,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 01:46:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043712176] [2022-11-23 01:46:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:46:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 01:46:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:46:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 01:46:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:46:07,418 INFO L87 Difference]: Start difference. First operand 530 states and 885 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:46:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:46:26,293 INFO L93 Difference]: Finished difference Result 2470 states and 4345 transitions. [2022-11-23 01:46:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 01:46:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-23 01:46:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:46:26,311 INFO L225 Difference]: With dead ends: 2470 [2022-11-23 01:46:26,311 INFO L226 Difference]: Without dead ends: 1958 [2022-11-23 01:46:26,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-11-23 01:46:26,319 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 4279 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 7913 mSolverCounterSat, 1773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4357 SdHoareTripleChecker+Valid, 4087 SdHoareTripleChecker+Invalid, 9686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1773 IncrementalHoareTripleChecker+Valid, 7913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:46:26,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4357 Valid, 4087 Invalid, 9686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1773 Valid, 7913 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-23 01:46:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-11-23 01:46:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1395. [2022-11-23 01:46:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1094 states have (on average 1.653564899451554) internal successors, (1809), 1141 states have internal predecessors, (1809), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2022-11-23 01:46:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2325 transitions. [2022-11-23 01:46:26,733 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2325 transitions. Word has length 85 [2022-11-23 01:46:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:46:26,734 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2325 transitions. [2022-11-23 01:46:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:46:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2325 transitions. [2022-11-23 01:46:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 01:46:26,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:46:26,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:46:26,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:46:26,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:46:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:46:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 150471569, now seen corresponding path program 1 times [2022-11-23 01:46:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:46:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841678757] [2022-11-23 01:46:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:46:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:46:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:46:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:46:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:46:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:46:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:46:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 01:46:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:46:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:46:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841678757] [2022-11-23 01:46:27,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841678757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:46:27,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:46:27,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 01:46:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898100822] [2022-11-23 01:46:27,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:46:27,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:46:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:46:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:46:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:46:27,609 INFO L87 Difference]: Start difference. First operand 1395 states and 2325 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 01:46:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:46:43,227 INFO L93 Difference]: Finished difference Result 3583 states and 6129 transitions. [2022-11-23 01:46:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 01:46:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2022-11-23 01:46:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:46:43,247 INFO L225 Difference]: With dead ends: 3583 [2022-11-23 01:46:43,247 INFO L226 Difference]: Without dead ends: 2032 [2022-11-23 01:46:43,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-11-23 01:46:43,259 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 4871 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 8730 mSolverCounterSat, 1416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 10146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1416 IncrementalHoareTripleChecker+Valid, 8730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:46:43,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 4514 Invalid, 10146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1416 Valid, 8730 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-23 01:46:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-11-23 01:46:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1470. [2022-11-23 01:46:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1152 states have (on average 1.6241319444444444) internal successors, (1871), 1201 states have internal predecessors, (1871), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-11-23 01:46:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2420 transitions. [2022-11-23 01:46:43,658 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2420 transitions. Word has length 94 [2022-11-23 01:46:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:46:43,659 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2420 transitions. [2022-11-23 01:46:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 01:46:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2420 transitions. [2022-11-23 01:46:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 01:46:43,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:46:43,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:46:43,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:46:43,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:46:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:46:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash 202169523, now seen corresponding path program 1 times [2022-11-23 01:46:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:46:43,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084141554] [2022-11-23 01:46:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:46:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:46:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:46:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:46:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:46:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:46:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:46:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:46:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:46:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:46:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:46:44,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084141554] [2022-11-23 01:46:44,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084141554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:46:44,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:46:44,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:46:44,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13353441] [2022-11-23 01:46:44,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:46:44,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:46:44,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:46:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:46:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:46:44,154 INFO L87 Difference]: Start difference. First operand 1470 states and 2420 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:46:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:46:51,335 INFO L93 Difference]: Finished difference Result 3462 states and 5831 transitions. [2022-11-23 01:46:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:46:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-11-23 01:46:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:46:51,353 INFO L225 Difference]: With dead ends: 3462 [2022-11-23 01:46:51,353 INFO L226 Difference]: Without dead ends: 2010 [2022-11-23 01:46:51,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:46:51,361 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 929 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:46:51,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1884 Invalid, 3169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [247 Valid, 2922 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 01:46:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-11-23 01:46:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1470. [2022-11-23 01:46:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1152 states have (on average 1.6232638888888888) internal successors, (1870), 1201 states have internal predecessors, (1870), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-11-23 01:46:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2419 transitions. [2022-11-23 01:46:51,825 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2419 transitions. Word has length 97 [2022-11-23 01:46:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:46:51,826 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2419 transitions. [2022-11-23 01:46:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:46:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2419 transitions. [2022-11-23 01:46:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 01:46:51,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:46:51,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:46:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:46:51,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:46:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:46:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash -582363142, now seen corresponding path program 1 times [2022-11-23 01:46:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:46:51,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73826525] [2022-11-23 01:46:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:46:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:46:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:46:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:46:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:46:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:46:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:46:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:46:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:46:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:46:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:46:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:46:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:46:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73826525] [2022-11-23 01:46:52,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73826525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:46:52,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:46:52,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 01:46:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512892317] [2022-11-23 01:46:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:46:52,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:46:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:46:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:46:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:46:52,500 INFO L87 Difference]: Start difference. First operand 1470 states and 2419 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:01,739 INFO L93 Difference]: Finished difference Result 3562 states and 6098 transitions. [2022-11-23 01:47:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 01:47:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-23 01:47:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:01,759 INFO L225 Difference]: With dead ends: 3562 [2022-11-23 01:47:01,759 INFO L226 Difference]: Without dead ends: 2150 [2022-11-23 01:47:01,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:47:01,768 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 2078 mSDsluCounter, 3992 mSDsCounter, 0 mSdLazyCounter, 6316 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 6938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 6316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:01,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4527 Invalid, 6938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [622 Valid, 6316 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 01:47:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-11-23 01:47:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1494. [2022-11-23 01:47:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6125429553264605) internal successors, (1877), 1221 states have internal predecessors, (1877), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2462 transitions. [2022-11-23 01:47:02,195 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2462 transitions. Word has length 98 [2022-11-23 01:47:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:02,196 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2462 transitions. [2022-11-23 01:47:02,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2462 transitions. [2022-11-23 01:47:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 01:47:02,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:02,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:02,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:47:02,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1237331055, now seen corresponding path program 1 times [2022-11-23 01:47:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:02,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515762053] [2022-11-23 01:47:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 01:47:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:02,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:02,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515762053] [2022-11-23 01:47:02,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515762053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:02,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:02,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:47:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626091782] [2022-11-23 01:47:02,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:02,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:02,713 INFO L87 Difference]: Start difference. First operand 1494 states and 2462 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:09,663 INFO L93 Difference]: Finished difference Result 3478 states and 5886 transitions. [2022-11-23 01:47:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:47:09,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-11-23 01:47:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:09,682 INFO L225 Difference]: With dead ends: 3478 [2022-11-23 01:47:09,683 INFO L226 Difference]: Without dead ends: 2042 [2022-11-23 01:47:09,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:47:09,691 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1027 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:09,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1876 Invalid, 3064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 01:47:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-23 01:47:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-11-23 01:47:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6082474226804124) internal successors, (1872), 1221 states have internal predecessors, (1872), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2457 transitions. [2022-11-23 01:47:10,224 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2457 transitions. Word has length 99 [2022-11-23 01:47:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:10,225 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2457 transitions. [2022-11-23 01:47:10,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2457 transitions. [2022-11-23 01:47:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 01:47:10,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:10,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:10,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:47:10,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 689977238, now seen corresponding path program 1 times [2022-11-23 01:47:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:10,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338090793] [2022-11-23 01:47:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 01:47:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:10,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338090793] [2022-11-23 01:47:10,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338090793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:10,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:47:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997383541] [2022-11-23 01:47:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:10,726 INFO L87 Difference]: Start difference. First operand 1494 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:16,904 INFO L93 Difference]: Finished difference Result 3478 states and 5881 transitions. [2022-11-23 01:47:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:47:16,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-23 01:47:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:16,919 INFO L225 Difference]: With dead ends: 3478 [2022-11-23 01:47:16,919 INFO L226 Difference]: Without dead ends: 2042 [2022-11-23 01:47:16,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:47:16,926 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1825 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:16,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 1751 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 01:47:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-23 01:47:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-11-23 01:47:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.6039518900343643) internal successors, (1867), 1221 states have internal predecessors, (1867), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2452 transitions. [2022-11-23 01:47:17,332 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2452 transitions. Word has length 100 [2022-11-23 01:47:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2452 transitions. [2022-11-23 01:47:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2452 transitions. [2022-11-23 01:47:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 01:47:17,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:17,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:17,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:47:17,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1769918004, now seen corresponding path program 1 times [2022-11-23 01:47:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:17,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442783436] [2022-11-23 01:47:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:17,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 01:47:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:17,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:17,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442783436] [2022-11-23 01:47:17,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442783436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:17,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:17,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:47:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087626315] [2022-11-23 01:47:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:17,810 INFO L87 Difference]: Start difference. First operand 1494 states and 2452 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:23,999 INFO L93 Difference]: Finished difference Result 3478 states and 5876 transitions. [2022-11-23 01:47:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:47:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-11-23 01:47:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:24,012 INFO L225 Difference]: With dead ends: 3478 [2022-11-23 01:47:24,012 INFO L226 Difference]: Without dead ends: 2042 [2022-11-23 01:47:24,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:47:24,020 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1432 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:24,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1810 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 01:47:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-23 01:47:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1494. [2022-11-23 01:47:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1164 states have (on average 1.5996563573883162) internal successors, (1862), 1221 states have internal predecessors, (1862), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2447 transitions. [2022-11-23 01:47:24,580 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2447 transitions. Word has length 101 [2022-11-23 01:47:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:24,580 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2447 transitions. [2022-11-23 01:47:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2447 transitions. [2022-11-23 01:47:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 01:47:24,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:24,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:47:24,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1707733771, now seen corresponding path program 1 times [2022-11-23 01:47:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:24,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698646240] [2022-11-23 01:47:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 01:47:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:25,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698646240] [2022-11-23 01:47:25,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698646240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:25,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:25,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:47:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813267973] [2022-11-23 01:47:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:47:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:47:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:47:25,080 INFO L87 Difference]: Start difference. First operand 1494 states and 2447 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:33,327 INFO L93 Difference]: Finished difference Result 3501 states and 5905 transitions. [2022-11-23 01:47:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:47:33,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-11-23 01:47:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:33,338 INFO L225 Difference]: With dead ends: 3501 [2022-11-23 01:47:33,338 INFO L226 Difference]: Without dead ends: 2071 [2022-11-23 01:47:33,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:47:33,345 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1826 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 4759 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 4759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:33,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 3147 Invalid, 5302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [543 Valid, 4759 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 01:47:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-23 01:47:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1496. [2022-11-23 01:47:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1166 states have (on average 1.5986277873070327) internal successors, (1864), 1223 states have internal predecessors, (1864), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2449 transitions. [2022-11-23 01:47:33,707 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2449 transitions. Word has length 101 [2022-11-23 01:47:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:33,708 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2449 transitions. [2022-11-23 01:47:33,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2449 transitions. [2022-11-23 01:47:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 01:47:33,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:33,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:33,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:47:33,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1500797937, now seen corresponding path program 1 times [2022-11-23 01:47:33,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278633112] [2022-11-23 01:47:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:33,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:34,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278633112] [2022-11-23 01:47:34,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278633112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:34,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:34,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:47:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458111857] [2022-11-23 01:47:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:34,173 INFO L87 Difference]: Start difference. First operand 1496 states and 2449 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:40,900 INFO L93 Difference]: Finished difference Result 3484 states and 5877 transitions. [2022-11-23 01:47:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:47:40,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-23 01:47:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:40,917 INFO L225 Difference]: With dead ends: 3484 [2022-11-23 01:47:40,917 INFO L226 Difference]: Without dead ends: 2046 [2022-11-23 01:47:40,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:47:40,925 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1418 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:40,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1797 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 01:47:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-11-23 01:47:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1496. [2022-11-23 01:47:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1166 states have (on average 1.5943396226415094) internal successors, (1859), 1223 states have internal predecessors, (1859), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2444 transitions. [2022-11-23 01:47:41,367 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2444 transitions. Word has length 102 [2022-11-23 01:47:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2444 transitions. [2022-11-23 01:47:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2444 transitions. [2022-11-23 01:47:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 01:47:41,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:41,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 01:47:41,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1754249388, now seen corresponding path program 1 times [2022-11-23 01:47:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:41,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138801367] [2022-11-23 01:47:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:41,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138801367] [2022-11-23 01:47:41,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138801367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:41,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:41,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:47:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18596818] [2022-11-23 01:47:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:47:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:47:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:47:41,893 INFO L87 Difference]: Start difference. First operand 1496 states and 2444 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:50,815 INFO L93 Difference]: Finished difference Result 3505 states and 5902 transitions. [2022-11-23 01:47:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:47:50,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-11-23 01:47:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:50,828 INFO L225 Difference]: With dead ends: 3505 [2022-11-23 01:47:50,828 INFO L226 Difference]: Without dead ends: 2075 [2022-11-23 01:47:50,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:47:50,835 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1000 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 4944 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:50,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 3321 Invalid, 5203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 4944 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 01:47:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-11-23 01:47:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1499. [2022-11-23 01:47:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1169 states have (on average 1.592814371257485) internal successors, (1862), 1226 states have internal predecessors, (1862), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2447 transitions. [2022-11-23 01:47:51,455 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2447 transitions. Word has length 102 [2022-11-23 01:47:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 1499 states and 2447 transitions. [2022-11-23 01:47:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:47:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2447 transitions. [2022-11-23 01:47:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 01:47:51,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:51,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 01:47:51,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2031834119, now seen corresponding path program 1 times [2022-11-23 01:47:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707051533] [2022-11-23 01:47:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 01:47:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:51,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707051533] [2022-11-23 01:47:51,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707051533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:51,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:51,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:47:51,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488607251] [2022-11-23 01:47:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:51,943 INFO L87 Difference]: Start difference. First operand 1499 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:58,231 INFO L93 Difference]: Finished difference Result 3533 states and 5931 transitions. [2022-11-23 01:47:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:47:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-11-23 01:47:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:58,246 INFO L225 Difference]: With dead ends: 3533 [2022-11-23 01:47:58,247 INFO L226 Difference]: Without dead ends: 2052 [2022-11-23 01:47:58,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:47:58,252 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1727 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:58,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 1738 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 01:47:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2022-11-23 01:47:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1499. [2022-11-23 01:47:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1169 states have (on average 1.5919589392643285) internal successors, (1861), 1226 states have internal predecessors, (1861), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:47:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2446 transitions. [2022-11-23 01:47:58,687 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2446 transitions. Word has length 103 [2022-11-23 01:47:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:58,688 INFO L495 AbstractCegarLoop]: Abstraction has 1499 states and 2446 transitions. [2022-11-23 01:47:58,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:47:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2446 transitions. [2022-11-23 01:47:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 01:47:58,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:58,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:47:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:47:58,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 863637864, now seen corresponding path program 1 times [2022-11-23 01:47:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372663304] [2022-11-23 01:47:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:47:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:47:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 01:47:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:47:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:47:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:47:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:47:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:47:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:47:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:59,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372663304] [2022-11-23 01:47:59,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372663304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:59,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:59,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:47:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386043020] [2022-11-23 01:47:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:47:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:59,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:47:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:47:59,261 INFO L87 Difference]: Start difference. First operand 1499 states and 2446 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:07,943 INFO L93 Difference]: Finished difference Result 3493 states and 5881 transitions. [2022-11-23 01:48:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:48:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-23 01:48:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:07,959 INFO L225 Difference]: With dead ends: 3493 [2022-11-23 01:48:07,959 INFO L226 Difference]: Without dead ends: 2042 [2022-11-23 01:48:07,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:48:07,965 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 997 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 4960 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 4960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:07,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3307 Invalid, 5209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [249 Valid, 4960 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 01:48:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-23 01:48:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1491. [2022-11-23 01:48:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1161 states have (on average 1.5934539190353143) internal successors, (1850), 1218 states have internal predecessors, (1850), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:48:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2435 transitions. [2022-11-23 01:48:08,396 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2435 transitions. Word has length 103 [2022-11-23 01:48:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:08,396 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 2435 transitions. [2022-11-23 01:48:08,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2435 transitions. [2022-11-23 01:48:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 01:48:08,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:08,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:48:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 01:48:08,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -530005529, now seen corresponding path program 1 times [2022-11-23 01:48:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:08,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409715157] [2022-11-23 01:48:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:48:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:48:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 01:48:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:48:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:48:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:48:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:48:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:48:08,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409715157] [2022-11-23 01:48:08,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409715157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:08,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:08,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:48:08,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598557422] [2022-11-23 01:48:08,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:08,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:48:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:08,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:48:08,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:48:08,999 INFO L87 Difference]: Start difference. First operand 1491 states and 2435 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:17,151 INFO L93 Difference]: Finished difference Result 3493 states and 5877 transitions. [2022-11-23 01:48:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:48:17,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-23 01:48:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:17,162 INFO L225 Difference]: With dead ends: 3493 [2022-11-23 01:48:17,163 INFO L226 Difference]: Without dead ends: 2063 [2022-11-23 01:48:17,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:48:17,167 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1775 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 4625 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:17,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 3170 Invalid, 5157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [532 Valid, 4625 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 01:48:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-11-23 01:48:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1495. [2022-11-23 01:48:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1165 states have (on average 1.5914163090128755) internal successors, (1854), 1222 states have internal predecessors, (1854), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:48:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2439 transitions. [2022-11-23 01:48:17,591 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2439 transitions. Word has length 103 [2022-11-23 01:48:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:17,592 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2439 transitions. [2022-11-23 01:48:17,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2439 transitions. [2022-11-23 01:48:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 01:48:17,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:17,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:48:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 01:48:17,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2020186962, now seen corresponding path program 1 times [2022-11-23 01:48:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:17,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96992563] [2022-11-23 01:48:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:48:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:48:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 01:48:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:48:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:48:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:48:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:48:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:48:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:18,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96992563] [2022-11-23 01:48:18,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96992563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:18,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:18,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:48:18,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816532856] [2022-11-23 01:48:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:48:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:48:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:48:18,094 INFO L87 Difference]: Start difference. First operand 1495 states and 2439 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:26,259 INFO L93 Difference]: Finished difference Result 3501 states and 5883 transitions. [2022-11-23 01:48:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:48:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-23 01:48:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:26,275 INFO L225 Difference]: With dead ends: 3501 [2022-11-23 01:48:26,275 INFO L226 Difference]: Without dead ends: 2071 [2022-11-23 01:48:26,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:48:26,280 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1766 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 4624 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 5157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 4624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:26,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 3163 Invalid, 5157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [533 Valid, 4624 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 01:48:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-23 01:48:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1500. [2022-11-23 01:48:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1170 states have (on average 1.5888888888888888) internal successors, (1859), 1227 states have internal predecessors, (1859), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-23 01:48:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2444 transitions. [2022-11-23 01:48:26,768 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2444 transitions. Word has length 104 [2022-11-23 01:48:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:26,768 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2444 transitions. [2022-11-23 01:48:26,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-23 01:48:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2444 transitions. [2022-11-23 01:48:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 01:48:26,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:26,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:48:26,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 01:48:26,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1255357678, now seen corresponding path program 1 times [2022-11-23 01:48:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:26,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878378994] [2022-11-23 01:48:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:48:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:48:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:48:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:48:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:48:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:48:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:48:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:48:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:48:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:27,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878378994] [2022-11-23 01:48:27,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878378994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:27,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:27,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 01:48:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041351193] [2022-11-23 01:48:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:27,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:48:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:48:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:48:27,622 INFO L87 Difference]: Start difference. First operand 1500 states and 2444 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 01:49:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:02,861 INFO L93 Difference]: Finished difference Result 5939 states and 10347 transitions. [2022-11-23 01:49:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-23 01:49:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-11-23 01:49:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:02,881 INFO L225 Difference]: With dead ends: 5939 [2022-11-23 01:49:02,881 INFO L226 Difference]: Without dead ends: 4517 [2022-11-23 01:49:02,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1893 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-11-23 01:49:02,890 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 10018 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 16767 mSolverCounterSat, 4289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10093 SdHoareTripleChecker+Valid, 7295 SdHoareTripleChecker+Invalid, 21056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4289 IncrementalHoareTripleChecker+Valid, 16767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:02,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10093 Valid, 7295 Invalid, 21056 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4289 Valid, 16767 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time] [2022-11-23 01:49:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2022-11-23 01:49:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 3116. [2022-11-23 01:49:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2434 states have (on average 1.576417419884963) internal successors, (3837), 2552 states have internal predecessors, (3837), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-23 01:49:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 5060 transitions. [2022-11-23 01:49:04,000 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 5060 transitions. Word has length 105 [2022-11-23 01:49:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:04,001 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 5060 transitions. [2022-11-23 01:49:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 01:49:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 5060 transitions. [2022-11-23 01:49:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 01:49:04,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:04,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:49:04,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 01:49:04,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1449647346, now seen corresponding path program 1 times [2022-11-23 01:49:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:04,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5510397] [2022-11-23 01:49:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:49:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:49:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:49:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:49:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:49:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:49:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:49:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:49:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5510397] [2022-11-23 01:49:04,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5510397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:49:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223633010] [2022-11-23 01:49:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:49:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:49:04,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:49:04,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:49:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:49:05,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:49:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:49:05,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:49:05,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223633010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:05,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:49:05,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-23 01:49:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339969281] [2022-11-23 01:49:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:05,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:49:05,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:49:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:49:05,433 INFO L87 Difference]: Start difference. First operand 3116 states and 5060 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 01:49:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:07,587 INFO L93 Difference]: Finished difference Result 3232 states and 5247 transitions. [2022-11-23 01:49:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:49:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-11-23 01:49:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:07,606 INFO L225 Difference]: With dead ends: 3232 [2022-11-23 01:49:07,606 INFO L226 Difference]: Without dead ends: 3217 [2022-11-23 01:49:07,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:49:07,610 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 777 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:07,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2131 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 01:49:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2022-11-23 01:49:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3125. [2022-11-23 01:49:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5742939009414654) internal successors, (3846), 2561 states have internal predecessors, (3846), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-23 01:49:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5069 transitions. [2022-11-23 01:49:08,827 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5069 transitions. Word has length 106 [2022-11-23 01:49:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:08,827 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 5069 transitions. [2022-11-23 01:49:08,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 01:49:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5069 transitions. [2022-11-23 01:49:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 01:49:08,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:08,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:49:08,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 01:49:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 01:49:09,039 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:09,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1690886665, now seen corresponding path program 1 times [2022-11-23 01:49:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:09,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426739502] [2022-11-23 01:49:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:49:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:49:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:49:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:49:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:49:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:49:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:49:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 01:49:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:49:09,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:09,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426739502] [2022-11-23 01:49:09,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426739502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:09,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:09,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:49:09,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998402253] [2022-11-23 01:49:09,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:09,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:49:09,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:49:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:49:09,707 INFO L87 Difference]: Start difference. First operand 3125 states and 5069 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 01:49:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:24,887 INFO L93 Difference]: Finished difference Result 4245 states and 7195 transitions. [2022-11-23 01:49:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 01:49:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-23 01:49:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:24,911 INFO L225 Difference]: With dead ends: 4245 [2022-11-23 01:49:24,912 INFO L226 Difference]: Without dead ends: 4230 [2022-11-23 01:49:24,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-11-23 01:49:24,916 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3254 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 6193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:24,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 2629 Invalid, 6193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1133 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-23 01:49:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2022-11-23 01:49:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 3125. [2022-11-23 01:49:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2443 states have (on average 1.5714285714285714) internal successors, (3839), 2561 states have internal predecessors, (3839), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-23 01:49:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5062 transitions. [2022-11-23 01:49:26,078 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5062 transitions. Word has length 112 [2022-11-23 01:49:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:26,079 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 5062 transitions. [2022-11-23 01:49:26,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 01:49:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5062 transitions. [2022-11-23 01:49:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 01:49:26,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:26,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:49:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 01:49:26,088 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2057524241, now seen corresponding path program 1 times [2022-11-23 01:49:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433549528] [2022-11-23 01:49:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:49:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:49:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:49:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:49:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:49:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:49:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:49:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 01:49:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:49:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:49:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433549528] [2022-11-23 01:49:26,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433549528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:26,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:26,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 01:49:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817412460] [2022-11-23 01:49:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:26,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:49:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:49:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:49:26,770 INFO L87 Difference]: Start difference. First operand 3125 states and 5062 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:49:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:48,847 INFO L93 Difference]: Finished difference Result 8095 states and 13728 transitions. [2022-11-23 01:49:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 01:49:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-11-23 01:49:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:48,875 INFO L225 Difference]: With dead ends: 8095 [2022-11-23 01:49:48,876 INFO L226 Difference]: Without dead ends: 5056 [2022-11-23 01:49:48,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 01:49:48,891 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 6826 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 8575 mSolverCounterSat, 3334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6827 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 11909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3334 IncrementalHoareTripleChecker+Valid, 8575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:48,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6827 Valid, 2533 Invalid, 11909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3334 Valid, 8575 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-23 01:49:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-11-23 01:49:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 3141. [2022-11-23 01:49:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 2455 states have (on average 1.564969450101833) internal successors, (3842), 2573 states have internal predecessors, (3842), 524 states have call successors, (524), 124 states have call predecessors, (524), 161 states have return successors, (740), 515 states have call predecessors, (740), 519 states have call successors, (740) [2022-11-23 01:49:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5106 transitions. [2022-11-23 01:49:50,268 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5106 transitions. Word has length 123 [2022-11-23 01:49:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:50,269 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 5106 transitions. [2022-11-23 01:49:50,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:49:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5106 transitions. [2022-11-23 01:49:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 01:49:50,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:50,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:49:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 01:49:50,274 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1179129061, now seen corresponding path program 1 times [2022-11-23 01:49:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:50,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804409099] [2022-11-23 01:49:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:50,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:49:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:49:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:49:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:49:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:49:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:49:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:49:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:49:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 01:49:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:49:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:49:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804409099] [2022-11-23 01:49:51,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804409099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:51,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:51,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:49:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451684436] [2022-11-23 01:49:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:51,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:49:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:49:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:49:51,012 INFO L87 Difference]: Start difference. First operand 3141 states and 5106 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:50:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:40,495 INFO L93 Difference]: Finished difference Result 15676 states and 28071 transitions. [2022-11-23 01:50:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 01:50:40,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-11-23 01:50:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:40,609 INFO L225 Difference]: With dead ends: 15676 [2022-11-23 01:50:40,609 INFO L226 Difference]: Without dead ends: 12621 [2022-11-23 01:50:40,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 01:50:40,638 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 7823 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 10577 mSolverCounterSat, 4933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7890 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 15510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4933 IncrementalHoareTripleChecker+Valid, 10577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:40,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7890 Valid, 3149 Invalid, 15510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4933 Valid, 10577 Invalid, 0 Unknown, 0 Unchecked, 35.5s Time] [2022-11-23 01:50:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2022-11-23 01:50:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 8202. [2022-11-23 01:50:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 6105 states have (on average 1.549058149058149) internal successors, (9457), 6524 states have internal predecessors, (9457), 1747 states have call successors, (1747), 242 states have call predecessors, (1747), 349 states have return successors, (2690), 1723 states have call predecessors, (2690), 1742 states have call successors, (2690) [2022-11-23 01:50:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 13894 transitions. [2022-11-23 01:50:44,831 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 13894 transitions. Word has length 124 [2022-11-23 01:50:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:44,832 INFO L495 AbstractCegarLoop]: Abstraction has 8202 states and 13894 transitions. [2022-11-23 01:50:44,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:50:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 13894 transitions. [2022-11-23 01:50:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 01:50:44,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:44,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 01:50:44,838 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash 701479761, now seen corresponding path program 1 times [2022-11-23 01:50:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:44,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832205788] [2022-11-23 01:50:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:50:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:50:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:50:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 01:50:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:50:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 01:50:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:50:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:50:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 01:50:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832205788] [2022-11-23 01:50:45,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832205788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:50:45,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701667980] [2022-11-23 01:50:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:50:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:50:45,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:50:45,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:50:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 01:50:45,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:50:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 01:50:46,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:50:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 01:50:46,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701667980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:50:46,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:50:46,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-11-23 01:50:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320415210] [2022-11-23 01:50:46,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:50:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:50:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:50:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:50:46,432 INFO L87 Difference]: Start difference. First operand 8202 states and 13894 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-23 01:51:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:11,209 INFO L93 Difference]: Finished difference Result 21249 states and 37861 transitions. [2022-11-23 01:51:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 01:51:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-11-23 01:51:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:11,316 INFO L225 Difference]: With dead ends: 21249 [2022-11-23 01:51:11,316 INFO L226 Difference]: Without dead ends: 13129 [2022-11-23 01:51:11,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 01:51:11,369 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 4487 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 6860 mSolverCounterSat, 1643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4548 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 8503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1643 IncrementalHoareTripleChecker+Valid, 6860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:11,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4548 Valid, 3686 Invalid, 8503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1643 Valid, 6860 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-11-23 01:51:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13129 states. [2022-11-23 01:51:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 9164. [2022-11-23 01:51:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 6855 states have (on average 1.5393143690736688) internal successors, (10552), 7307 states have internal predecessors, (10552), 1899 states have call successors, (1899), 282 states have call predecessors, (1899), 409 states have return successors, (2957), 1865 states have call predecessors, (2957), 1894 states have call successors, (2957) [2022-11-23 01:51:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 15408 transitions. [2022-11-23 01:51:16,574 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 15408 transitions. Word has length 132 [2022-11-23 01:51:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:16,575 INFO L495 AbstractCegarLoop]: Abstraction has 9164 states and 15408 transitions. [2022-11-23 01:51:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-23 01:51:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 15408 transitions. [2022-11-23 01:51:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 01:51:16,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:16,581 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:16,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:51:16,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 01:51:16,795 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 207187003, now seen corresponding path program 1 times [2022-11-23 01:51:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:16,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630692136] [2022-11-23 01:51:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:51:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-23 01:51:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:51:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:51:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:51:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 01:51:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:51:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 01:51:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:17,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630692136] [2022-11-23 01:51:17,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630692136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:51:17,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551492196] [2022-11-23 01:51:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:17,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:17,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:51:17,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:51:17,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:51:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:17,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:51:17,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:51:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 01:51:17,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:51:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551492196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:17,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:51:17,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-23 01:51:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42921540] [2022-11-23 01:51:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:51:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:51:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:51:17,835 INFO L87 Difference]: Start difference. First operand 9164 states and 15408 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 01:51:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:27,272 INFO L93 Difference]: Finished difference Result 25410 states and 43228 transitions. [2022-11-23 01:51:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:51:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2022-11-23 01:51:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:27,352 INFO L225 Difference]: With dead ends: 25410 [2022-11-23 01:51:27,352 INFO L226 Difference]: Without dead ends: 16304 [2022-11-23 01:51:27,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:51:27,393 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 943 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:27,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 3320 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:51:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16304 states. [2022-11-23 01:51:35,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16304 to 15519. [2022-11-23 01:51:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15519 states, 11450 states have (on average 1.5572052401746725) internal successors, (17830), 12276 states have internal predecessors, (17830), 3415 states have call successors, (3415), 482 states have call predecessors, (3415), 653 states have return successors, (4769), 3385 states have call predecessors, (4769), 3410 states have call successors, (4769) [2022-11-23 01:51:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15519 states to 15519 states and 26014 transitions. [2022-11-23 01:51:35,415 INFO L78 Accepts]: Start accepts. Automaton has 15519 states and 26014 transitions. Word has length 136 [2022-11-23 01:51:35,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:35,415 INFO L495 AbstractCegarLoop]: Abstraction has 15519 states and 26014 transitions. [2022-11-23 01:51:35,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 01:51:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15519 states and 26014 transitions. [2022-11-23 01:51:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 01:51:35,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:35,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:35,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 01:51:35,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555b940c-c909-44de-aa66-d455d193e565/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 01:51:35,624 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash -491403103, now seen corresponding path program 1 times [2022-11-23 01:51:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:35,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571010620] [2022-11-23 01:51:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:35,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:51:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:51:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:51:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 01:51:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 01:51:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 01:51:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 01:51:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571010620] [2022-11-23 01:51:36,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571010620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:36,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 01:51:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929318034] [2022-11-23 01:51:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:36,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:51:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:51:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:51:36,452 INFO L87 Difference]: Start difference. First operand 15519 states and 26014 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 01:52:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:08,786 INFO L93 Difference]: Finished difference Result 38041 states and 66689 transitions. [2022-11-23 01:52:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 01:52:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2022-11-23 01:52:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:08,951 INFO L225 Difference]: With dead ends: 38041 [2022-11-23 01:52:08,951 INFO L226 Difference]: Without dead ends: 22620 [2022-11-23 01:52:09,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-23 01:52:09,023 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 2678 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 6216 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 7096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 6216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:09,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2738 Valid, 3648 Invalid, 7096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [880 Valid, 6216 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-11-23 01:52:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2022-11-23 01:52:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 16030. [2022-11-23 01:52:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16030 states, 11941 states have (on average 1.549200234486224) internal successors, (18499), 12732 states have internal predecessors, (18499), 3383 states have call successors, (3383), 544 states have call predecessors, (3383), 705 states have return successors, (4673), 3353 states have call predecessors, (4673), 3378 states have call successors, (4673) [2022-11-23 01:52:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16030 states to 16030 states and 26555 transitions. [2022-11-23 01:52:18,670 INFO L78 Accepts]: Start accepts. Automaton has 16030 states and 26555 transitions. Word has length 135 [2022-11-23 01:52:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:18,670 INFO L495 AbstractCegarLoop]: Abstraction has 16030 states and 26555 transitions. [2022-11-23 01:52:18,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 01:52:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states and 26555 transitions. [2022-11-23 01:52:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 01:52:18,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:18,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 01:52:18,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 468694886, now seen corresponding path program 1 times [2022-11-23 01:52:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:18,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401937607] [2022-11-23 01:52:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:52:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:52:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:52:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 01:52:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 01:52:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-23 01:52:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 01:52:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:52:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 01:52:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 01:52:19,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:19,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401937607] [2022-11-23 01:52:19,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401937607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:19,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:19,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:52:19,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077061118] [2022-11-23 01:52:19,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:19,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:52:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:52:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:52:19,514 INFO L87 Difference]: Start difference. First operand 16030 states and 26555 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 01:53:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:20,354 INFO L93 Difference]: Finished difference Result 69016 states and 129549 transitions. [2022-11-23 01:53:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 01:53:20,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-11-23 01:53:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:21,378 INFO L225 Difference]: With dead ends: 69016 [2022-11-23 01:53:21,378 INFO L226 Difference]: Without dead ends: 53072 [2022-11-23 01:53:21,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:53:21,502 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 4373 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 3173 mSolverCounterSat, 1604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1604 IncrementalHoareTripleChecker+Valid, 3173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:21,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4442 Valid, 2409 Invalid, 4777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1604 Valid, 3173 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-23 01:53:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53072 states.