./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro --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 47500ba035fb95802358be3af8dbcb0499051de1fc18562b910c6b7689271057 --- 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-8393723 [2022-11-18 19:54:15,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:54:15,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:54:15,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:54:15,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:54:15,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:54:15,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:54:15,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:54:15,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:54:15,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:54:15,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:54:15,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:54:15,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:54:15,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:54:15,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:54:15,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:54:15,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:54:15,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:54:15,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:54:15,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:54:15,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:54:15,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:54:15,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:54:15,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:54:15,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:54:15,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:54:15,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:54:15,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:54:15,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:54:15,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:54:15,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:54:15,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:54:15,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:54:15,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:54:15,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:54:15,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:54:15,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:54:15,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:54:15,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:54:15,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:54:15,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:54:15,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:54:15,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:54:15,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:54:15,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:54:15,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:54:15,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:54:15,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:54:15,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:54:15,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:54:15,774 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:54:15,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:54:15,776 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:54:15,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:54:15,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:54:15,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:54:15,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:54:15,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:54:15,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:54:15,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:54:15,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:54:15,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:54:15,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:54:15,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:54:15,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:54:15,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:54:15,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:54:15,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:54:15,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:54:15,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:54:15,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:54:15,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:54:15,795 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:54:15,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:54:15,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:54:15,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47500ba035fb95802358be3af8dbcb0499051de1fc18562b910c6b7689271057 [2022-11-18 19:54:16,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:54:16,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:54:16,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:54:16,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:54:16,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:54:16,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/email_spec9_product16.cil.c [2022-11-18 19:54:16,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/data/d1e6b6ed6/82565c79381a4ad6a6d98817e4581962/FLAGb07429da5 [2022-11-18 19:54:17,006 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:54:17,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/sv-benchmarks/c/product-lines/email_spec9_product16.cil.c [2022-11-18 19:54:17,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/data/d1e6b6ed6/82565c79381a4ad6a6d98817e4581962/FLAGb07429da5 [2022-11-18 19:54:17,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/data/d1e6b6ed6/82565c79381a4ad6a6d98817e4581962 [2022-11-18 19:54:17,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:54:17,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:54:17,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:54:17,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:54:17,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:54:17,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:54:17" (1/1) ... [2022-11-18 19:54:17,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bca5f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:17, skipping insertion in model container [2022-11-18 19:54:17,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:54:17" (1/1) ... [2022-11-18 19:54:17,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:54:17,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:54:17,940 WARN L234 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_a219bb76-6c68-44a0-a66e-395b0747cebd/sv-benchmarks/c/product-lines/email_spec9_product16.cil.c[33283,33296] [2022-11-18 19:54:18,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:54:18,127 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:54:18,224 WARN L234 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_a219bb76-6c68-44a0-a66e-395b0747cebd/sv-benchmarks/c/product-lines/email_spec9_product16.cil.c[33283,33296] [2022-11-18 19:54:18,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:54:18,283 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:54:18,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18 WrapperNode [2022-11-18 19:54:18,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:54:18,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:54:18,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:54:18,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:54:18,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,400 INFO L138 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-11-18 19:54:18,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:54:18,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:54:18,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:54:18,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:54:18,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,510 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:54:18,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:54:18,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:54:18,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:54:18,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (1/1) ... [2022-11-18 19:54:18,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:54:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:18,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:54:18,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:54:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-18 19:54:18,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-18 19:54:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-18 19:54:18,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-18 19:54:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-18 19:54:18,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-18 19:54:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-18 19:54:18,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-18 19:54:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-18 19:54:18,665 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-18 19:54:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-18 19:54:18,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-18 19:54:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-18 19:54:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-18 19:54:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-18 19:54:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-18 19:54:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-18 19:54:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:54:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-18 19:54:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-18 19:54:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-18 19:54:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-18 19:54:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-18 19:54:18,668 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-18 19:54:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-18 19:54:18,668 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-18 19:54:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-18 19:54:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-18 19:54:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-18 19:54:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-18 19:54:18,669 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-18 19:54:18,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-18 19:54:18,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:54:18,670 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-18 19:54:18,670 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-18 19:54:18,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:54:18,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:54:18,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:54:18,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:54:20,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:54:20,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:54:20,146 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:54:20,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:54:20 BoogieIcfgContainer [2022-11-18 19:54:20,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:54:20,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:54:20,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:54:20,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:54:20,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:54:17" (1/3) ... [2022-11-18 19:54:20,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed4b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:54:20, skipping insertion in model container [2022-11-18 19:54:20,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:18" (2/3) ... [2022-11-18 19:54:20,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed4b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:54:20, skipping insertion in model container [2022-11-18 19:54:20,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:54:20" (3/3) ... [2022-11-18 19:54:20,167 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product16.cil.c [2022-11-18 19:54:20,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:54:20,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:54:20,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:54:20,285 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;@585f89da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:54:20,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:54:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-18 19:54:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:54:20,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:20,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:54:20,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -806898450, now seen corresponding path program 1 times [2022-11-18 19:54:20,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:20,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64995490] [2022-11-18 19:54:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:54:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:54:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:54:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:54:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:54:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:54:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:54:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:54:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:54:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64995490] [2022-11-18 19:54:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64995490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:21,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717989420] [2022-11-18 19:54:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:21,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:21,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:21,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:54:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 19:54:21,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:54:21,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:21,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717989420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:21,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:21,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-18 19:54:21,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552188861] [2022-11-18 19:54:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:54:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:54:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:54:21,911 INFO L87 Difference]: Start difference. First operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:21,996 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2022-11-18 19:54:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:54:21,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-11-18 19:54:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:22,017 INFO L225 Difference]: With dead ends: 444 [2022-11-18 19:54:22,017 INFO L226 Difference]: Without dead ends: 292 [2022-11-18 19:54:22,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:54:22,028 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:22,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:54:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-18 19:54:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-11-18 19:54:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 233 states have internal predecessors, (351), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-18 19:54:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 440 transitions. [2022-11-18 19:54:22,142 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 440 transitions. Word has length 89 [2022-11-18 19:54:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:22,146 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 440 transitions. [2022-11-18 19:54:22,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 440 transitions. [2022-11-18 19:54:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 19:54:22,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:22,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:54:22,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:54:22,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 19:54:22,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1177822227, now seen corresponding path program 1 times [2022-11-18 19:54:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:22,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624245131] [2022-11-18 19:54:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:22,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:54:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:54:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:54:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:54:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:54:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:54:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:54:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:54:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:54:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:22,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624245131] [2022-11-18 19:54:22,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624245131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:22,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389493331] [2022-11-18 19:54:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:22,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:22,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:22,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:22,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:54:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:54:23,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:54:23,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:23,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389493331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:23,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:23,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 19:54:23,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103817287] [2022-11-18 19:54:23,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:23,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:54:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:54:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:23,255 INFO L87 Difference]: Start difference. First operand 292 states and 440 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:23,339 INFO L93 Difference]: Finished difference Result 434 states and 639 transitions. [2022-11-18 19:54:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:54:23,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-11-18 19:54:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:23,349 INFO L225 Difference]: With dead ends: 434 [2022-11-18 19:54:23,350 INFO L226 Difference]: Without dead ends: 295 [2022-11-18 19:54:23,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:23,353 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:23,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:54:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-18 19:54:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2022-11-18 19:54:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.521551724137931) internal successors, (353), 235 states have internal predecessors, (353), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-18 19:54:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2022-11-18 19:54:23,401 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 90 [2022-11-18 19:54:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:23,404 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2022-11-18 19:54:23,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2022-11-18 19:54:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 19:54:23,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:23,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:54:23,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:23,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:23,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash 213599068, now seen corresponding path program 1 times [2022-11-18 19:54:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:23,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560416214] [2022-11-18 19:54:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:54:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:54:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:54:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:54:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:54:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:54:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:54:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:54:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:54:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560416214] [2022-11-18 19:54:23,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560416214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:23,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383605218] [2022-11-18 19:54:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:23,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:23,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:23,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:54:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:54:24,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:54:24,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:24,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383605218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:24,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:24,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 19:54:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452402232] [2022-11-18 19:54:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:54:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:54:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:24,347 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:24,388 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2022-11-18 19:54:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:54:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-11-18 19:54:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:24,392 INFO L225 Difference]: With dead ends: 618 [2022-11-18 19:54:24,393 INFO L226 Difference]: Without dead ends: 351 [2022-11-18 19:54:24,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:24,396 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:24,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 858 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:54:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-18 19:54:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2022-11-18 19:54:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 273 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-18 19:54:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2022-11-18 19:54:24,429 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 96 [2022-11-18 19:54:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:24,430 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2022-11-18 19:54:24,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2022-11-18 19:54:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:54:24,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:24,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:54:24,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:24,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1191934709, now seen corresponding path program 1 times [2022-11-18 19:54:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621034830] [2022-11-18 19:54:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:54:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:54:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:54:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:54:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:54:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:54:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:54:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:54:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:54:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621034830] [2022-11-18 19:54:24,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621034830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626830371] [2022-11-18 19:54:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:24,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:24,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:24,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:54:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:25,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:54:25,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:54:25,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:25,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626830371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:25,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:25,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-18 19:54:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568026150] [2022-11-18 19:54:25,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:25,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:54:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:54:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:54:25,433 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:25,519 INFO L93 Difference]: Finished difference Result 677 states and 1042 transitions. [2022-11-18 19:54:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-18 19:54:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:25,525 INFO L225 Difference]: With dead ends: 677 [2022-11-18 19:54:25,526 INFO L226 Difference]: Without dead ends: 345 [2022-11-18 19:54:25,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:25,529 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 125 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:25,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1579 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:54:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-18 19:54:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-18 19:54:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 275 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2022-11-18 19:54:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 529 transitions. [2022-11-18 19:54:25,580 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 529 transitions. Word has length 97 [2022-11-18 19:54:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:25,580 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 529 transitions. [2022-11-18 19:54:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 529 transitions. [2022-11-18 19:54:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 19:54:25,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:25,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:54:25,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:54:25,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash -398998019, now seen corresponding path program 1 times [2022-11-18 19:54:25,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:25,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382819765] [2022-11-18 19:54:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:25,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:54:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:54:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:54:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:54:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:54:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 19:54:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 19:54:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:54:26,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382819765] [2022-11-18 19:54:26,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382819765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206924015] [2022-11-18 19:54:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:26,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:26,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:26,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:54:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:26,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:54:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:54:26,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:26,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206924015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:26,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:26,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-18 19:54:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224678492] [2022-11-18 19:54:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:26,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:54:26,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:54:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:54:26,618 INFO L87 Difference]: Start difference. First operand 345 states and 529 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:26,724 INFO L93 Difference]: Finished difference Result 679 states and 1047 transitions. [2022-11-18 19:54:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-11-18 19:54:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:26,729 INFO L225 Difference]: With dead ends: 679 [2022-11-18 19:54:26,729 INFO L226 Difference]: Without dead ends: 347 [2022-11-18 19:54:26,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:54:26,732 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 124 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:26,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1568 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:54:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-18 19:54:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-11-18 19:54:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-11-18 19:54:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2022-11-18 19:54:26,763 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 98 [2022-11-18 19:54:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:26,764 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2022-11-18 19:54:26,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2022-11-18 19:54:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 19:54:26,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:26,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:54:26,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:26,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:26,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash 262721501, now seen corresponding path program 1 times [2022-11-18 19:54:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:26,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954245104] [2022-11-18 19:54:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:54:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 19:54:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:54:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:54:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:54:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:54:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:54:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954245104] [2022-11-18 19:54:27,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954245104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:27,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:27,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:54:27,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850943785] [2022-11-18 19:54:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:27,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:54:27,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:27,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:54:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:54:27,275 INFO L87 Difference]: Start difference. First operand 347 states and 535 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:30,125 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2022-11-18 19:54:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:54:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-18 19:54:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:30,131 INFO L225 Difference]: With dead ends: 819 [2022-11-18 19:54:30,132 INFO L226 Difference]: Without dead ends: 495 [2022-11-18 19:54:30,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:54:30,135 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1035 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:30,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 988 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:54:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-18 19:54:30,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 347. [2022-11-18 19:54:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-11-18 19:54:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 534 transitions. [2022-11-18 19:54:30,221 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 534 transitions. Word has length 99 [2022-11-18 19:54:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 534 transitions. [2022-11-18 19:54:30,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 534 transitions. [2022-11-18 19:54:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 19:54:30,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:30,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:54:30,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:54:30,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 963094467, now seen corresponding path program 2 times [2022-11-18 19:54:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:30,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441935329] [2022-11-18 19:54:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:54:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 19:54:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 19:54:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:54:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:54:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 19:54:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:54:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441935329] [2022-11-18 19:54:30,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441935329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:30,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:30,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:54:30,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551302326] [2022-11-18 19:54:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:30,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:54:30,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:54:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:54:30,505 INFO L87 Difference]: Start difference. First operand 347 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:33,202 INFO L93 Difference]: Finished difference Result 821 states and 1264 transitions. [2022-11-18 19:54:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:54:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-11-18 19:54:33,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:33,209 INFO L225 Difference]: With dead ends: 821 [2022-11-18 19:54:33,210 INFO L226 Difference]: Without dead ends: 497 [2022-11-18 19:54:33,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:54:33,213 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1030 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:33,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 988 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:54:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-18 19:54:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-11-18 19:54:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2022-11-18 19:54:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2022-11-18 19:54:33,296 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 100 [2022-11-18 19:54:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:33,299 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2022-11-18 19:54:33,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:54:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2022-11-18 19:54:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 19:54:33,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:33,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:54:33,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:54:33,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash -868146014, now seen corresponding path program 1 times [2022-11-18 19:54:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:33,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59936456] [2022-11-18 19:54:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:54:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:54:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:54:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:54:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:54:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:54:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:33,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59936456] [2022-11-18 19:54:33,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59936456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:33,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:33,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:54:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116636905] [2022-11-18 19:54:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:54:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:54:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:54:33,714 INFO L87 Difference]: Start difference. First operand 349 states and 537 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-18 19:54:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:37,332 INFO L93 Difference]: Finished difference Result 819 states and 1259 transitions. [2022-11-18 19:54:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:54:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2022-11-18 19:54:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:37,339 INFO L225 Difference]: With dead ends: 819 [2022-11-18 19:54:37,339 INFO L226 Difference]: Without dead ends: 497 [2022-11-18 19:54:37,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:54:37,342 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1154 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:37,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1290 Invalid, 4171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [384 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 19:54:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-18 19:54:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2022-11-18 19:54:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2022-11-18 19:54:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2022-11-18 19:54:37,390 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 101 [2022-11-18 19:54:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:37,391 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2022-11-18 19:54:37,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-18 19:54:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2022-11-18 19:54:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 19:54:37,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:37,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:54:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:54:37,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash 400437826, now seen corresponding path program 2 times [2022-11-18 19:54:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33257808] [2022-11-18 19:54:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:54:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:54:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:54:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:54:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:54:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:54:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33257808] [2022-11-18 19:54:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33257808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:37,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:37,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:54:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806219654] [2022-11-18 19:54:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:37,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:54:37,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:54:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:54:37,764 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-18 19:54:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:41,455 INFO L93 Difference]: Finished difference Result 821 states and 1265 transitions. [2022-11-18 19:54:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:54:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2022-11-18 19:54:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:41,461 INFO L225 Difference]: With dead ends: 821 [2022-11-18 19:54:41,461 INFO L226 Difference]: Without dead ends: 499 [2022-11-18 19:54:41,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:54:41,464 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1149 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3796 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:41,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1290 Invalid, 4189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3796 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-18 19:54:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-18 19:54:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 351. [2022-11-18 19:54:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5291970802919708) internal successors, (419), 281 states have internal predecessors, (419), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2022-11-18 19:54:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 542 transitions. [2022-11-18 19:54:41,520 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 542 transitions. Word has length 102 [2022-11-18 19:54:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:41,521 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 542 transitions. [2022-11-18 19:54:41,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-18 19:54:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 542 transitions. [2022-11-18 19:54:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:54:41,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:41,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:54:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:54:41,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1821386649, now seen corresponding path program 1 times [2022-11-18 19:54:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:41,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665008229] [2022-11-18 19:54:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:54:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:54:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:54:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:54:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:54:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:41,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665008229] [2022-11-18 19:54:41,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665008229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347681063] [2022-11-18 19:54:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:41,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:41,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:41,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:41,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:54:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:54:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:42,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:42,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347681063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:42,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:42,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-11-18 19:54:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116705322] [2022-11-18 19:54:42,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:42,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:54:42,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:54:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:54:42,278 INFO L87 Difference]: Start difference. First operand 351 states and 542 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 19:54:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:45,081 INFO L93 Difference]: Finished difference Result 990 states and 1593 transitions. [2022-11-18 19:54:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:54:45,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2022-11-18 19:54:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:45,089 INFO L225 Difference]: With dead ends: 990 [2022-11-18 19:54:45,090 INFO L226 Difference]: Without dead ends: 851 [2022-11-18 19:54:45,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:54:45,093 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1529 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:45,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1258 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:54:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-18 19:54:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 679. [2022-11-18 19:54:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.5929368029739777) internal successors, (857), 545 states have internal predecessors, (857), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2022-11-18 19:54:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1118 transitions. [2022-11-18 19:54:45,187 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1118 transitions. Word has length 103 [2022-11-18 19:54:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:45,188 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1118 transitions. [2022-11-18 19:54:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 19:54:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1118 transitions. [2022-11-18 19:54:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 19:54:45,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:45,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:54:45,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:45,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a219bb76-6c68-44a0-a66e-395b0747cebd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:54:45,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946556, now seen corresponding path program 1 times [2022-11-18 19:54:45,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432124732] [2022-11-18 19:54:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:45,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:54:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:54:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:54:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:54:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:54:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:45,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432124732] [2022-11-18 19:54:45,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432124732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:45,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:45,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111799442] [2022-11-18 19:54:45,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:45,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:45,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:45,627 INFO L87 Difference]: Start difference. First operand 679 states and 1118 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:47,945 INFO L93 Difference]: Finished difference Result 1771 states and 2964 transitions. [2022-11-18 19:54:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-18 19:54:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:47,974 INFO L225 Difference]: With dead ends: 1771 [2022-11-18 19:54:47,974 INFO L226 Difference]: Without dead ends: 1160 [2022-11-18 19:54:47,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:47,979 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1014 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:47,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 851 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:54:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-18 19:54:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1004. [2022-11-18 19:54:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.6045056320400501) internal successors, (1282), 806 states have internal predecessors, (1282), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2022-11-18 19:54:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1681 transitions. [2022-11-18 19:54:48,118 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1681 transitions. Word has length 109 [2022-11-18 19:54:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:48,118 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1681 transitions. [2022-11-18 19:54:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1681 transitions. [2022-11-18 19:54:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 19:54:48,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:48,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:54:48,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:54:48,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2033055594, now seen corresponding path program 1 times [2022-11-18 19:54:48,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:48,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122621641] [2022-11-18 19:54:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:54:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:54:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:54:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:54:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:54:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:48,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122621641] [2022-11-18 19:54:48,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122621641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:48,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:48,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778469909] [2022-11-18 19:54:48,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:48,288 INFO L87 Difference]: Start difference. First operand 1004 states and 1681 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:50,520 INFO L93 Difference]: Finished difference Result 2551 states and 4313 transitions. [2022-11-18 19:54:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-11-18 19:54:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:50,534 INFO L225 Difference]: With dead ends: 2551 [2022-11-18 19:54:50,535 INFO L226 Difference]: Without dead ends: 1668 [2022-11-18 19:54:50,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:50,541 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1012 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:50,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 866 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:54:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-18 19:54:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1512. [2022-11-18 19:54:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1212 states have (on average 1.6113861386138615) internal successors, (1953), 1219 states have internal predecessors, (1953), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2022-11-18 19:54:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2542 transitions. [2022-11-18 19:54:50,769 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2542 transitions. Word has length 110 [2022-11-18 19:54:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:50,769 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2542 transitions. [2022-11-18 19:54:50,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2542 transitions. [2022-11-18 19:54:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 19:54:50,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:50,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:54:50,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:54:50,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1439293862, now seen corresponding path program 1 times [2022-11-18 19:54:50,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067130255] [2022-11-18 19:54:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:54:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:54:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 19:54:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 19:54:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:54:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:50,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:50,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067130255] [2022-11-18 19:54:50,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067130255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:50,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:50,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864881049] [2022-11-18 19:54:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:50,940 INFO L87 Difference]: Start difference. First operand 1512 states and 2542 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:53,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:53,240 INFO L93 Difference]: Finished difference Result 3703 states and 6322 transitions. [2022-11-18 19:54:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-11-18 19:54:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:53,258 INFO L225 Difference]: With dead ends: 3703 [2022-11-18 19:54:53,259 INFO L226 Difference]: Without dead ends: 2437 [2022-11-18 19:54:53,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:53,267 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1010 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:53,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 827 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:54:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-11-18 19:54:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2281. [2022-11-18 19:54:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1865 states have internal predecessors, (3004), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2022-11-18 19:54:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3855 transitions. [2022-11-18 19:54:53,550 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3855 transitions. Word has length 111 [2022-11-18 19:54:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:53,550 INFO L495 AbstractCegarLoop]: Abstraction has 2281 states and 3855 transitions. [2022-11-18 19:54:53,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3855 transitions. [2022-11-18 19:54:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:54:53,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:53,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:54:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:54:53,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash -497333621, now seen corresponding path program 1 times [2022-11-18 19:54:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020427943] [2022-11-18 19:54:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:54:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:54:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:54:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:54:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:54:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:53,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020427943] [2022-11-18 19:54:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020427943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:53,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180202756] [2022-11-18 19:54:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:53,743 INFO L87 Difference]: Start difference. First operand 2281 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:56,092 INFO L93 Difference]: Finished difference Result 5497 states and 9456 transitions. [2022-11-18 19:54:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:56,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-18 19:54:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:56,114 INFO L225 Difference]: With dead ends: 5497 [2022-11-18 19:54:56,114 INFO L226 Difference]: Without dead ends: 3666 [2022-11-18 19:54:56,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:56,123 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1008 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:56,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 829 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:54:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2022-11-18 19:54:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3510. [2022-11-18 19:54:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2908 states have (on average 1.6200137551581844) internal successors, (4711), 2915 states have internal predecessors, (4711), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2022-11-18 19:54:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5946 transitions. [2022-11-18 19:54:56,638 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5946 transitions. Word has length 112 [2022-11-18 19:54:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:56,639 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5946 transitions. [2022-11-18 19:54:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5946 transitions. [2022-11-18 19:54:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 19:54:56,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:56,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:54:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:54:56,654 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1467419038, now seen corresponding path program 1 times [2022-11-18 19:54:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653476644] [2022-11-18 19:54:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:54:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:54:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:54:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:54:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:54:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:54:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:54:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:54:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:54:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:54:56,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653476644] [2022-11-18 19:54:56,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653476644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:56,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:56,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424008812] [2022-11-18 19:54:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:56,829 INFO L87 Difference]: Start difference. First operand 3510 states and 5946 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:54:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:59,459 INFO L93 Difference]: Finished difference Result 8445 states and 14603 transitions. [2022-11-18 19:54:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:59,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-11-18 19:54:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:59,500 INFO L225 Difference]: With dead ends: 8445 [2022-11-18 19:54:59,500 INFO L226 Difference]: Without dead ends: 5697 [2022-11-18 19:54:59,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:59,514 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1006 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:59,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 831 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:54:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2022-11-18 19:55:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5541. [2022-11-18 19:55:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4563 states have (on average 1.613631382862152) internal successors, (7363), 4570 states have internal predecessors, (7363), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2022-11-18 19:55:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9394 transitions. [2022-11-18 19:55:00,263 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9394 transitions. Word has length 113 [2022-11-18 19:55:00,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:00,264 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 9394 transitions. [2022-11-18 19:55:00,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9394 transitions. [2022-11-18 19:55:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 19:55:00,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:00,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:55:00,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:55:00,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -678340145, now seen corresponding path program 1 times [2022-11-18 19:55:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463403789] [2022-11-18 19:55:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:55:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:55:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:55:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:55:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 19:55:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:55:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:55:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:55:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:55:00,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:00,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463403789] [2022-11-18 19:55:00,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463403789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:00,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:00,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043458857] [2022-11-18 19:55:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:00,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:00,452 INFO L87 Difference]: Start difference. First operand 5541 states and 9394 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:03,289 INFO L93 Difference]: Finished difference Result 13782 states and 23824 transitions. [2022-11-18 19:55:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-11-18 19:55:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:03,351 INFO L225 Difference]: With dead ends: 13782 [2022-11-18 19:55:03,351 INFO L226 Difference]: Without dead ends: 9380 [2022-11-18 19:55:03,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:03,369 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1004 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:03,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 830 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:55:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2022-11-18 19:55:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9224. [2022-11-18 19:55:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7640 states have (on average 1.6111256544502617) internal successors, (12309), 7647 states have internal predecessors, (12309), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2022-11-18 19:55:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15630 transitions. [2022-11-18 19:55:04,526 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15630 transitions. Word has length 114 [2022-11-18 19:55:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:04,526 INFO L495 AbstractCegarLoop]: Abstraction has 9224 states and 15630 transitions. [2022-11-18 19:55:04,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15630 transitions. [2022-11-18 19:55:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 19:55:04,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:04,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:55:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:55:04,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1860754352, now seen corresponding path program 1 times [2022-11-18 19:55:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:04,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597233047] [2022-11-18 19:55:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:55:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:55:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:55:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:55:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:55:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:55:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:55:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 19:55:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:55:04,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:04,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597233047] [2022-11-18 19:55:04,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597233047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:04,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:04,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014817629] [2022-11-18 19:55:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:04,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:04,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:04,706 INFO L87 Difference]: Start difference. First operand 9224 states and 15630 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:08,069 INFO L93 Difference]: Finished difference Result 23966 states and 41370 transitions. [2022-11-18 19:55:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-11-18 19:55:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:08,172 INFO L225 Difference]: With dead ends: 23966 [2022-11-18 19:55:08,173 INFO L226 Difference]: Without dead ends: 16333 [2022-11-18 19:55:08,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:08,200 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1002 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:08,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 876 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:55:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2022-11-18 19:55:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16177. [2022-11-18 19:55:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13390 states have (on average 1.6020164301717699) internal successors, (21451), 13397 states have internal predecessors, (21451), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2022-11-18 19:55:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27322 transitions. [2022-11-18 19:55:10,302 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27322 transitions. Word has length 115 [2022-11-18 19:55:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 16177 states and 27322 transitions. [2022-11-18 19:55:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27322 transitions. [2022-11-18 19:55:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 19:55:10,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:10,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:55:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:55:10,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1941197296, now seen corresponding path program 1 times [2022-11-18 19:55:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935265925] [2022-11-18 19:55:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:55:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:55:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:55:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:55:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:55:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:55:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:55:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 19:55:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:55:10,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935265925] [2022-11-18 19:55:10,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935265925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:10,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:10,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564671587] [2022-11-18 19:55:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:10,479 INFO L87 Difference]: Start difference. First operand 16177 states and 27322 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:15,424 INFO L93 Difference]: Finished difference Result 42932 states and 73969 transitions. [2022-11-18 19:55:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:15,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-11-18 19:55:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:15,576 INFO L225 Difference]: With dead ends: 42932 [2022-11-18 19:55:15,577 INFO L226 Difference]: Without dead ends: 28988 [2022-11-18 19:55:15,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:15,621 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1000 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 830 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:55:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2022-11-18 19:55:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 28832. [2022-11-18 19:55:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24006 states have (on average 1.597725568607848) internal successors, (38355), 24013 states have internal predecessors, (38355), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2022-11-18 19:55:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48578 transitions. [2022-11-18 19:55:18,607 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48578 transitions. Word has length 116 [2022-11-18 19:55:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:18,608 INFO L495 AbstractCegarLoop]: Abstraction has 28832 states and 48578 transitions. [2022-11-18 19:55:18,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48578 transitions. [2022-11-18 19:55:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 19:55:18,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:18,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:55:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:55:18,635 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash -732373582, now seen corresponding path program 1 times [2022-11-18 19:55:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591220723] [2022-11-18 19:55:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:55:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:55:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:55:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:55:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:55:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:55:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:55:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:55:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:55:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:18,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591220723] [2022-11-18 19:55:18,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591220723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:18,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:18,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921380122] [2022-11-18 19:55:18,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:18,771 INFO L87 Difference]: Start difference. First operand 28832 states and 48578 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:25,541 INFO L93 Difference]: Finished difference Result 78694 states and 134728 transitions. [2022-11-18 19:55:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-11-18 19:55:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:25,803 INFO L225 Difference]: With dead ends: 78694 [2022-11-18 19:55:25,804 INFO L226 Difference]: Without dead ends: 52867 [2022-11-18 19:55:25,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:25,888 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 998 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:25,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 830 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:55:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52867 states. [2022-11-18 19:55:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52867 to 52711. [2022-11-18 19:55:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44170 states have (on average 1.5921213493321258) internal successors, (70324), 44177 states have internal predecessors, (70324), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2022-11-18 19:55:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88509 transitions. [2022-11-18 19:55:31,424 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88509 transitions. Word has length 117 [2022-11-18 19:55:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:31,425 INFO L495 AbstractCegarLoop]: Abstraction has 52711 states and 88509 transitions. [2022-11-18 19:55:31,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88509 transitions. [2022-11-18 19:55:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:55:31,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:31,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 19:55:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:55:31,460 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1116888912, now seen corresponding path program 1 times [2022-11-18 19:55:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:31,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597221757] [2022-11-18 19:55:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:55:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:55:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:55:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:55:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:55:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 19:55:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:55:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 19:55:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:55:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597221757] [2022-11-18 19:55:31,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597221757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:31,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:31,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909428648] [2022-11-18 19:55:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:31,621 INFO L87 Difference]: Start difference. First operand 52711 states and 88509 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:55:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:41,270 INFO L93 Difference]: Finished difference Result 98465 states and 168915 transitions. [2022-11-18 19:55:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:41,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-11-18 19:55:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:41,720 INFO L225 Difference]: With dead ends: 98465 [2022-11-18 19:55:41,720 INFO L226 Difference]: Without dead ends: 98326 [2022-11-18 19:55:41,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:41,765 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 996 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:41,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 830 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:55:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states.