./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN --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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- 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-6b4ec56 [2022-11-20 11:56:44,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:56:44,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:56:44,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:56:44,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:56:44,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:56:44,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:56:44,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:56:44,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:56:44,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:56:44,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:56:44,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:56:44,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:56:44,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:56:44,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:56:44,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:56:44,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:56:44,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:56:44,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:56:44,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:56:44,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:56:44,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:56:44,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:56:44,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:56:44,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:56:44,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:56:44,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:56:44,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:56:44,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:56:44,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:56:44,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:56:44,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:56:44,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:56:44,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:56:44,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:56:44,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:56:44,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:56:44,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:56:44,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:56:44,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:56:44,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:56:44,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:56:44,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:56:44,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:56:44,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:56:44,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:56:44,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:56:44,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:56:44,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:56:44,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:56:44,461 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:56:44,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:56:44,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:56:44,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:56:44,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:56:44,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:56:44,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:56:44,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:56:44,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:56:44,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:56:44,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:56:44,464 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:56:44,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:56:44,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:56:44,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:56:44,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:56:44,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:44,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:56:44,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:56:44,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:56:44,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:56:44,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:56:44,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:56:44,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:56:44,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:56:44,468 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_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2022-11-20 11:56:44,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:56:44,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:56:44,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:56:44,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:56:44,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:56:44,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-11-20 11:56:48,167 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:56:48,581 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:56:48,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-11-20 11:56:48,632 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/data/e08dd49cc/57848fb914924385a617a1d8e7fe894e/FLAGb1606972a [2022-11-20 11:56:48,648 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/data/e08dd49cc/57848fb914924385a617a1d8e7fe894e [2022-11-20 11:56:48,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:56:48,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:56:48,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:48,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:56:48,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:56:48,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:48" (1/1) ... [2022-11-20 11:56:48,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569db225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:48, skipping insertion in model container [2022-11-20 11:56:48,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:48" (1/1) ... [2022-11-20 11:56:48,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:56:48,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:56:49,036 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2022-11-20 11:56:49,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:49,277 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:56:49,335 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2022-11-20 11:56:49,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:49,451 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:56:49,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49 WrapperNode [2022-11-20 11:56:49,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:49,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:49,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:56:49,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:56:49,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,556 INFO L138 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 808 [2022-11-20 11:56:49,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:49,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:56:49,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:56:49,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:56:49,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:56:49,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:56:49,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:56:49,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:56:49,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (1/1) ... [2022-11-20 11:56:49,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:49,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:56:49,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:56:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:56:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-20 11:56:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-20 11:56:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 11:56:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 11:56:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 11:56:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 11:56:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-20 11:56:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-20 11:56:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 11:56:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 11:56:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:56:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:56:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:56:49,719 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:56:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 11:56:49,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 11:56:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 11:56:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 11:56:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 11:56:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 11:56:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 11:56:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 11:56:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-20 11:56:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-20 11:56:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 11:56:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 11:56:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-20 11:56:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-20 11:56:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 11:56:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 11:56:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 11:56:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 11:56:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 11:56:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 11:56:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 11:56:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 11:56:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:56:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-20 11:56:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-20 11:56:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 11:56:49,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 11:56:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 11:56:49,725 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 11:56:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 11:56:49,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 11:56:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:56:49,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:56:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 11:56:49,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 11:56:49,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:56:49,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:56:51,446 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:56:51,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:56:51,470 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:56:51,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:51 BoogieIcfgContainer [2022-11-20 11:56:51,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:56:51,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:56:51,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:56:51,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:56:51,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:56:48" (1/3) ... [2022-11-20 11:56:51,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e5dcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:51, skipping insertion in model container [2022-11-20 11:56:51,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:49" (2/3) ... [2022-11-20 11:56:51,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e5dcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:51, skipping insertion in model container [2022-11-20 11:56:51,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:51" (3/3) ... [2022-11-20 11:56:51,502 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2022-11-20 11:56:51,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:56:51,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:56:51,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:56:51,636 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;@7a8efa93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:56:51,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:56:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-20 11:56:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:56:51,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:51,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:51,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1881157288, now seen corresponding path program 1 times [2022-11-20 11:56:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:51,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036071409] [2022-11-20 11:56:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:51,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:56:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:56:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:56:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:56:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:56:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:56:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:56:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:56:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:56:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:53,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036071409] [2022-11-20 11:56:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036071409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:53,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:53,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:56:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65233394] [2022-11-20 11:56:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:53,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:56:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:56:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:53,404 INFO L87 Difference]: Start difference. First operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:04,331 INFO L93 Difference]: Finished difference Result 1464 states and 2552 transitions. [2022-11-20 11:57:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:57:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-11-20 11:57:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:04,359 INFO L225 Difference]: With dead ends: 1464 [2022-11-20 11:57:04,359 INFO L226 Difference]: Without dead ends: 909 [2022-11-20 11:57:04,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:57:04,377 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1714 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 5705 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 6225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 5705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:04,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 3209 Invalid, 6225 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [520 Valid, 5705 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-20 11:57:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-11-20 11:57:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 558. [2022-11-20 11:57:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 453 states have internal predecessors, (733), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-11-20 11:57:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2022-11-20 11:57:04,712 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 85 [2022-11-20 11:57:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:04,713 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2022-11-20 11:57:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2022-11-20 11:57:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:57:04,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:04,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:04,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:57:04,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 782189340, now seen corresponding path program 1 times [2022-11-20 11:57:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:04,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870203221] [2022-11-20 11:57:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:04,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:57:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:57:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:57:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:57:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870203221] [2022-11-20 11:57:05,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870203221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:05,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:05,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:57:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189858744] [2022-11-20 11:57:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:05,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:57:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:57:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:05,434 INFO L87 Difference]: Start difference. First operand 558 states and 930 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:16,736 INFO L93 Difference]: Finished difference Result 1454 states and 2498 transitions. [2022-11-20 11:57:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:57:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-11-20 11:57:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:16,748 INFO L225 Difference]: With dead ends: 1454 [2022-11-20 11:57:16,749 INFO L226 Difference]: Without dead ends: 912 [2022-11-20 11:57:16,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:57:16,763 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1125 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 6000 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 6318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 6000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:16,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 3049 Invalid, 6318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [318 Valid, 6000 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-20 11:57:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-20 11:57:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 558. [2022-11-20 11:57:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 453 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-11-20 11:57:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 929 transitions. [2022-11-20 11:57:16,967 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 929 transitions. Word has length 86 [2022-11-20 11:57:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:16,968 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 929 transitions. [2022-11-20 11:57:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 929 transitions. [2022-11-20 11:57:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:57:16,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:16,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:16,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:57:16,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1830753775, now seen corresponding path program 1 times [2022-11-20 11:57:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582394920] [2022-11-20 11:57:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:57:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:57:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:57:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:57:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582394920] [2022-11-20 11:57:17,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582394920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011667605] [2022-11-20 11:57:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:17,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:17,545 INFO L87 Difference]: Start difference. First operand 558 states and 929 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:57:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:25,448 INFO L93 Difference]: Finished difference Result 1445 states and 2478 transitions. [2022-11-20 11:57:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:57:25,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-11-20 11:57:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:25,457 INFO L225 Difference]: With dead ends: 1445 [2022-11-20 11:57:25,457 INFO L226 Difference]: Without dead ends: 872 [2022-11-20 11:57:25,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:25,463 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2072 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:25,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 1685 Invalid, 3731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [701 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:57:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-20 11:57:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 534. [2022-11-20 11:57:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.673913043478261) internal successors, (693), 430 states have internal predecessors, (693), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:57:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2022-11-20 11:57:25,656 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 86 [2022-11-20 11:57:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:25,657 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2022-11-20 11:57:25,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:57:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2022-11-20 11:57:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:57:25,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:25,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:25,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:57:25,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash 273510260, now seen corresponding path program 1 times [2022-11-20 11:57:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:25,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75711140] [2022-11-20 11:57:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:57:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:57:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:57:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:57:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75711140] [2022-11-20 11:57:26,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75711140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:26,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:26,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:57:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170589473] [2022-11-20 11:57:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:57:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:57:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:26,321 INFO L87 Difference]: Start difference. First operand 534 states and 886 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:35,816 INFO L93 Difference]: Finished difference Result 1408 states and 2409 transitions. [2022-11-20 11:57:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:57:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-20 11:57:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:35,827 INFO L225 Difference]: With dead ends: 1408 [2022-11-20 11:57:35,827 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:57:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:57:35,845 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2100 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 5500 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 6200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 5500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:35,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 3129 Invalid, 6200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 5500 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 11:57:35,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:57:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-11-20 11:57:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 424 states have internal predecessors, (680), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:57:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 873 transitions. [2022-11-20 11:57:36,003 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 873 transitions. Word has length 87 [2022-11-20 11:57:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:36,004 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 873 transitions. [2022-11-20 11:57:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 873 transitions. [2022-11-20 11:57:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:57:36,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:36,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:57:36,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 65130564, now seen corresponding path program 1 times [2022-11-20 11:57:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107930622] [2022-11-20 11:57:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:57:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:57:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:57:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 11:57:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:57:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:36,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107930622] [2022-11-20 11:57:36,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107930622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:36,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:36,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:57:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55628774] [2022-11-20 11:57:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:36,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:57:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:57:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:36,692 INFO L87 Difference]: Start difference. First operand 528 states and 873 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:45,989 INFO L93 Difference]: Finished difference Result 1378 states and 2358 transitions. [2022-11-20 11:57:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:57:45,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-11-20 11:57:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:45,996 INFO L225 Difference]: With dead ends: 1378 [2022-11-20 11:57:45,996 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:57:46,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:57:46,001 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 2042 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 5347 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 6049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 5347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 3009 Invalid, 6049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 5347 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 11:57:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:57:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-11-20 11:57:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6642156862745099) internal successors, (679), 424 states have internal predecessors, (679), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:57:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 872 transitions. [2022-11-20 11:57:46,183 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 872 transitions. Word has length 88 [2022-11-20 11:57:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:46,184 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 872 transitions. [2022-11-20 11:57:46,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 872 transitions. [2022-11-20 11:57:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 11:57:46,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:46,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:57:46,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1623149487, now seen corresponding path program 1 times [2022-11-20 11:57:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:46,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563501386] [2022-11-20 11:57:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:57:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:57:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:57:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:57:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:57:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:46,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563501386] [2022-11-20 11:57:46,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563501386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:46,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:46,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:57:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019620858] [2022-11-20 11:57:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:46,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:57:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:57:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:46,904 INFO L87 Difference]: Start difference. First operand 528 states and 872 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:56,465 INFO L93 Difference]: Finished difference Result 1396 states and 2378 transitions. [2022-11-20 11:57:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:57:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-11-20 11:57:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:56,472 INFO L225 Difference]: With dead ends: 1396 [2022-11-20 11:57:56,472 INFO L226 Difference]: Without dead ends: 860 [2022-11-20 11:57:56,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:57:56,476 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2086 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 5385 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 6089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 5385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:56,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 3026 Invalid, 6089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 5385 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 11:57:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-20 11:57:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-11-20 11:57:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6567164179104477) internal successors, (666), 418 states have internal predecessors, (666), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:57:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 859 transitions. [2022-11-20 11:57:56,641 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 859 transitions. Word has length 89 [2022-11-20 11:57:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:56,641 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 859 transitions. [2022-11-20 11:57:56,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:57:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 859 transitions. [2022-11-20 11:57:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 11:57:56,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:56,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:56,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:56,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059270, now seen corresponding path program 1 times [2022-11-20 11:57:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:56,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856933938] [2022-11-20 11:57:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:57:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:57:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 11:57:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:57:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:57:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:57:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:57:57,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:57,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856933938] [2022-11-20 11:57:57,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856933938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:57,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:57,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:57:57,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316694683] [2022-11-20 11:57:57,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:57:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:57:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:57:57,257 INFO L87 Difference]: Start difference. First operand 522 states and 859 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:06,184 INFO L93 Difference]: Finished difference Result 1366 states and 2329 transitions. [2022-11-20 11:58:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:58:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-11-20 11:58:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:06,191 INFO L225 Difference]: With dead ends: 1366 [2022-11-20 11:58:06,192 INFO L226 Difference]: Without dead ends: 860 [2022-11-20 11:58:06,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:58:06,196 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1987 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 5230 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 5230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:06,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 3170 Invalid, 5930 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 5230 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-20 11:58:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-20 11:58:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-11-20 11:58:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.654228855721393) internal successors, (665), 418 states have internal predecessors, (665), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:58:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 858 transitions. [2022-11-20 11:58:06,433 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 858 transitions. Word has length 90 [2022-11-20 11:58:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:06,433 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 858 transitions. [2022-11-20 11:58:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 858 transitions. [2022-11-20 11:58:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:58:06,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:06,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:06,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:58:06,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1106325972, now seen corresponding path program 1 times [2022-11-20 11:58:06,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:06,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284937718] [2022-11-20 11:58:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:58:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:58:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:58:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:58:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:58:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:58:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:58:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284937718] [2022-11-20 11:58:07,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284937718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:58:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120480873] [2022-11-20 11:58:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:58:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:58:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:07,035 INFO L87 Difference]: Start difference. First operand 522 states and 858 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:16,947 INFO L93 Difference]: Finished difference Result 1387 states and 2351 transitions. [2022-11-20 11:58:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:58:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-20 11:58:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:16,954 INFO L225 Difference]: With dead ends: 1387 [2022-11-20 11:58:16,954 INFO L226 Difference]: Without dead ends: 881 [2022-11-20 11:58:16,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:58:16,958 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1489 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 5501 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:16,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 3149 Invalid, 6003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [502 Valid, 5501 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-20 11:58:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-20 11:58:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 527. [2022-11-20 11:58:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 407 states have (on average 1.6461916461916462) internal successors, (670), 423 states have internal predecessors, (670), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:58:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 863 transitions. [2022-11-20 11:58:17,122 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 863 transitions. Word has length 91 [2022-11-20 11:58:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:17,122 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 863 transitions. [2022-11-20 11:58:17,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 863 transitions. [2022-11-20 11:58:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:58:17,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:17,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:17,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:58:17,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1537712523, now seen corresponding path program 1 times [2022-11-20 11:58:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:17,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923905160] [2022-11-20 11:58:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:17,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:58:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:58:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:58:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:58:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:58:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:58:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:58:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:17,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923905160] [2022-11-20 11:58:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923905160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:17,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:17,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:58:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468570654] [2022-11-20 11:58:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:58:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:58:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:17,721 INFO L87 Difference]: Start difference. First operand 527 states and 863 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:27,288 INFO L93 Difference]: Finished difference Result 1389 states and 2350 transitions. [2022-11-20 11:58:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:58:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-20 11:58:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:27,294 INFO L225 Difference]: With dead ends: 1389 [2022-11-20 11:58:27,295 INFO L226 Difference]: Without dead ends: 854 [2022-11-20 11:58:27,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:58:27,298 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1521 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 5473 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 5975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:27,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 3172 Invalid, 5975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [502 Valid, 5473 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 11:58:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-20 11:58:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-11-20 11:58:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.643939393939394) internal successors, (651), 412 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:58:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 844 transitions. [2022-11-20 11:58:27,517 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 844 transitions. Word has length 91 [2022-11-20 11:58:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:27,517 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 844 transitions. [2022-11-20 11:58:27,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 844 transitions. [2022-11-20 11:58:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:58:27,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:27,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:27,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:58:27,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1696211253, now seen corresponding path program 1 times [2022-11-20 11:58:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:27,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546746990] [2022-11-20 11:58:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:58:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:58:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:58:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:58:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:58:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:58:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:58:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546746990] [2022-11-20 11:58:28,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546746990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:28,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:28,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:58:28,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459816051] [2022-11-20 11:58:28,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:28,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:58:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:58:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:28,107 INFO L87 Difference]: Start difference. First operand 516 states and 844 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:37,826 INFO L93 Difference]: Finished difference Result 1366 states and 2310 transitions. [2022-11-20 11:58:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:58:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-20 11:58:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:37,834 INFO L225 Difference]: With dead ends: 1366 [2022-11-20 11:58:37,834 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:58:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:58:37,838 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 982 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 5409 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 5409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 3123 Invalid, 5725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [316 Valid, 5409 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 11:58:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:58:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 522. [2022-11-20 11:58:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6343283582089552) internal successors, (657), 418 states have internal predecessors, (657), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:58:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2022-11-20 11:58:38,119 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 92 [2022-11-20 11:58:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:38,120 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2022-11-20 11:58:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2022-11-20 11:58:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:58:38,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:38,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:58:38,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash -435294003, now seen corresponding path program 1 times [2022-11-20 11:58:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:38,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500183731] [2022-11-20 11:58:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:58:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:58:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:58:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:58:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:58:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:58:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:58:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500183731] [2022-11-20 11:58:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500183731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:38,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:38,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:58:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571410282] [2022-11-20 11:58:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:38,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:58:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:58:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:38,747 INFO L87 Difference]: Start difference. First operand 522 states and 850 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:48,830 INFO L93 Difference]: Finished difference Result 1369 states and 2311 transitions. [2022-11-20 11:58:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:58:48,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-20 11:58:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:48,837 INFO L225 Difference]: With dead ends: 1369 [2022-11-20 11:58:48,838 INFO L226 Difference]: Without dead ends: 854 [2022-11-20 11:58:48,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:58:48,841 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 984 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 5367 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:48,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 3192 Invalid, 5682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [315 Valid, 5367 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-20 11:58:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-20 11:58:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-11-20 11:58:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.6414141414141414) internal successors, (650), 412 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-20 11:58:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 843 transitions. [2022-11-20 11:58:49,042 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 843 transitions. Word has length 92 [2022-11-20 11:58:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:49,043 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 843 transitions. [2022-11-20 11:58:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:58:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 843 transitions. [2022-11-20 11:58:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:58:49,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:49,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:58:49,047 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -397472774, now seen corresponding path program 1 times [2022-11-20 11:58:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:49,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377263196] [2022-11-20 11:58:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:58:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:58:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:58:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:58:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:58:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:58:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:58:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:58:49,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:49,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377263196] [2022-11-20 11:58:49,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377263196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:49,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:49,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798307110] [2022-11-20 11:58:49,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:49,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:49,669 INFO L87 Difference]: Start difference. First operand 516 states and 843 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 11:59:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:04,968 INFO L93 Difference]: Finished difference Result 2067 states and 3541 transitions. [2022-11-20 11:59:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:59:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2022-11-20 11:59:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:04,980 INFO L225 Difference]: With dead ends: 2067 [2022-11-20 11:59:04,980 INFO L226 Difference]: Without dead ends: 1569 [2022-11-20 11:59:04,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:59:04,983 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 4317 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 4376 mSolverCounterSat, 1922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 6298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1922 IncrementalHoareTripleChecker+Valid, 4376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:04,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4421 Valid, 2196 Invalid, 6298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1922 Valid, 4376 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-20 11:59:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-11-20 11:59:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 963. [2022-11-20 11:59:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 742 states have (on average 1.6037735849056605) internal successors, (1190), 772 states have internal predecessors, (1190), 180 states have call successors, (180), 43 states have call predecessors, (180), 40 states have return successors, (181), 172 states have call predecessors, (181), 176 states have call successors, (181) [2022-11-20 11:59:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1551 transitions. [2022-11-20 11:59:05,475 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1551 transitions. Word has length 93 [2022-11-20 11:59:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:05,476 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1551 transitions. [2022-11-20 11:59:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 11:59:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1551 transitions. [2022-11-20 11:59:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 11:59:05,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:05,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:59:05,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash 204066973, now seen corresponding path program 1 times [2022-11-20 11:59:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:05,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295677436] [2022-11-20 11:59:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:59:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:59:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:59:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:59:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:59:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:59:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:59:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295677436] [2022-11-20 11:59:06,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295677436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646048095] [2022-11-20 11:59:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:06,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:06,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:06,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:59:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:59:06,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:06,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:06,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646048095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:06,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:06,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-20 11:59:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866571179] [2022-11-20 11:59:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:06,815 INFO L87 Difference]: Start difference. First operand 963 states and 1551 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:59:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:07,950 INFO L93 Difference]: Finished difference Result 2763 states and 4519 transitions. [2022-11-20 11:59:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 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 [2022-11-20 11:59:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:07,963 INFO L225 Difference]: With dead ends: 2763 [2022-11-20 11:59:07,963 INFO L226 Difference]: Without dead ends: 1818 [2022-11-20 11:59:07,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:07,970 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 784 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:07,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1718 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:59:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-20 11:59:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1757. [2022-11-20 11:59:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1362 states have (on average 1.6240822320117474) internal successors, (2212), 1422 states have internal predecessors, (2212), 319 states have call successors, (319), 76 states have call predecessors, (319), 75 states have return successors, (334), 308 states have call predecessors, (334), 315 states have call successors, (334) [2022-11-20 11:59:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2865 transitions. [2022-11-20 11:59:08,954 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2865 transitions. Word has length 98 [2022-11-20 11:59:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:08,955 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2865 transitions. [2022-11-20 11:59:08,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:59:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2865 transitions. [2022-11-20 11:59:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 11:59:08,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:08,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:08,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:59:09,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1363197387, now seen corresponding path program 1 times [2022-11-20 11:59:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:09,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406912477] [2022-11-20 11:59:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:59:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:59:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:59:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:59:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:59:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:59:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:59:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:09,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406912477] [2022-11-20 11:59:09,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406912477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205427521] [2022-11-20 11:59:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:09,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:09,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:09,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:59:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:10,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:59:10,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:10,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:10,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205427521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:10,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:10,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-20 11:59:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411896889] [2022-11-20 11:59:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:10,411 INFO L87 Difference]: Start difference. First operand 1757 states and 2865 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:59:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:11,554 INFO L93 Difference]: Finished difference Result 3935 states and 6456 transitions. [2022-11-20 11:59:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 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 99 [2022-11-20 11:59:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:11,573 INFO L225 Difference]: With dead ends: 3935 [2022-11-20 11:59:11,573 INFO L226 Difference]: Without dead ends: 2196 [2022-11-20 11:59:11,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:11,586 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 782 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:11,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1657 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:59:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-11-20 11:59:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2149. [2022-11-20 11:59:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1669 states have (on average 1.6369083283403236) internal successors, (2732), 1744 states have internal predecessors, (2732), 388 states have call successors, (388), 91 states have call predecessors, (388), 91 states have return successors, (407), 376 states have call predecessors, (407), 384 states have call successors, (407) [2022-11-20 11:59:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3527 transitions. [2022-11-20 11:59:12,649 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3527 transitions. Word has length 99 [2022-11-20 11:59:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3527 transitions. [2022-11-20 11:59:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:59:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3527 transitions. [2022-11-20 11:59:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:59:12,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:12,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:12,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:12,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5566101f-cfcb-406d-8a2c-27270274dc86/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:59:12,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1972797999, now seen corresponding path program 1 times [2022-11-20 11:59:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:12,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182633271] [2022-11-20 11:59:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:59:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:59:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:59:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:59:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 11:59:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:59:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:59:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:59:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:13,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:13,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182633271] [2022-11-20 11:59:13,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182633271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:13,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:13,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:59:13,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510045708] [2022-11-20 11:59:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:59:13,465 INFO L87 Difference]: Start difference. First operand 2149 states and 3527 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:59:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:44,066 INFO L93 Difference]: Finished difference Result 11101 states and 20444 transitions. [2022-11-20 11:59:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:59:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-11-20 11:59:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:44,151 INFO L225 Difference]: With dead ends: 11101 [2022-11-20 11:59:44,151 INFO L226 Difference]: Without dead ends: 8970 [2022-11-20 11:59:44,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:59:44,171 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 4794 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 8359 mSolverCounterSat, 2833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 11192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2833 IncrementalHoareTripleChecker+Valid, 8359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:44,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 3468 Invalid, 11192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2833 Valid, 8359 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-11-20 11:59:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2022-11-20 11:59:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 5277. [2022-11-20 11:59:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 3865 states have (on average 1.6116429495472187) internal successors, (6229), 4170 states have internal predecessors, (6229), 1172 states have call successors, (1172), 176 states have call predecessors, (1172), 239 states have return successors, (1944), 1166 states have call predecessors, (1944), 1166 states have call successors, (1944) [2022-11-20 11:59:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 9345 transitions. [2022-11-20 11:59:47,303 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 9345 transitions. Word has length 101 [2022-11-20 11:59:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:47,303 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 9345 transitions. [2022-11-20 11:59:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:59:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 9345 transitions. [2022-11-20 11:59:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 11:59:47,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:47,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:59:47,309 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash -226788623, now seen corresponding path program 1 times [2022-11-20 11:59:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:47,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656132660] [2022-11-20 11:59:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:59:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:59:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:59:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:59:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:59:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:59:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:59:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:59:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:59:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:47,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:47,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656132660] [2022-11-20 11:59:47,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656132660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:47,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:47,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377656625] [2022-11-20 11:59:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:47,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:47,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:47,752 INFO L87 Difference]: Start difference. First operand 5277 states and 9345 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:59:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:59,360 INFO L93 Difference]: Finished difference Result 11995 states and 21665 transitions. [2022-11-20 11:59:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:59:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-20 11:59:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:59,413 INFO L225 Difference]: With dead ends: 11995 [2022-11-20 11:59:59,413 INFO L226 Difference]: Without dead ends: 6736 [2022-11-20 11:59:59,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:59:59,451 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1466 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1741 Invalid, 3333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [502 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 11:59:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2022-11-20 12:00:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 5285. [2022-11-20 12:00:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3871 states have (on average 1.6101782485145957) internal successors, (6233), 4176 states have internal predecessors, (6233), 1172 states have call successors, (1172), 180 states have call predecessors, (1172), 241 states have return successors, (1932), 1164 states have call predecessors, (1932), 1166 states have call successors, (1932) [2022-11-20 12:00:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 9337 transitions. [2022-11-20 12:00:02,830 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 9337 transitions. Word has length 102 [2022-11-20 12:00:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:02,831 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 9337 transitions. [2022-11-20 12:00:02,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:00:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 9337 transitions. [2022-11-20 12:00:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 12:00:02,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:02,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:02,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:00:02,837 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -468332789, now seen corresponding path program 1 times [2022-11-20 12:00:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004277402] [2022-11-20 12:00:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:00:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:00:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:00:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:00:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:00:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:00:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:00:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:00:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:00:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 12:00:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:00:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:00:03,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:03,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004277402] [2022-11-20 12:00:03,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004277402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:03,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:03,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:00:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054830544] [2022-11-20 12:00:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:00:03,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:00:03,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:00:03,437 INFO L87 Difference]: Start difference. First operand 5285 states and 9337 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:00:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:44,291 INFO L93 Difference]: Finished difference Result 23187 states and 44894 transitions. [2022-11-20 12:00:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:00:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-11-20 12:00:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:44,476 INFO L225 Difference]: With dead ends: 23187 [2022-11-20 12:00:44,476 INFO L226 Difference]: Without dead ends: 17920 [2022-11-20 12:00:44,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:00:44,537 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 3746 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 8779 mSolverCounterSat, 2388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3855 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 11167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2388 IncrementalHoareTripleChecker+Valid, 8779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:44,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3855 Valid, 4143 Invalid, 11167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2388 Valid, 8779 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time] [2022-11-20 12:00:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2022-11-20 12:00:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 10527. [2022-11-20 12:00:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 7716 states have (on average 1.6065318818040435) internal successors, (12396), 8321 states have internal predecessors, (12396), 2323 states have call successors, (2323), 354 states have call predecessors, (2323), 487 states have return successors, (4267), 2317 states have call predecessors, (4267), 2313 states have call successors, (4267) [2022-11-20 12:00:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 18986 transitions. [2022-11-20 12:00:50,699 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 18986 transitions. Word has length 110 [2022-11-20 12:00:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:50,700 INFO L495 AbstractCegarLoop]: Abstraction has 10527 states and 18986 transitions. [2022-11-20 12:00:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:00:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 18986 transitions. [2022-11-20 12:00:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:00:50,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:50,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:50,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:00:50,707 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1224110669, now seen corresponding path program 1 times [2022-11-20 12:00:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:50,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428808826] [2022-11-20 12:00:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:00:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:00:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:00:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:00:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:00:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:00:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:00:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:00:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:00:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:00:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:00:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:00:51,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:51,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428808826] [2022-11-20 12:00:51,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428808826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:51,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:51,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:00:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295750258] [2022-11-20 12:00:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:00:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:51,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:00:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:00:51,161 INFO L87 Difference]: Start difference. First operand 10527 states and 18986 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:01:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:06,470 INFO L93 Difference]: Finished difference Result 23795 states and 44531 transitions. [2022-11-20 12:01:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:01:06,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-11-20 12:01:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:06,593 INFO L225 Difference]: With dead ends: 23795 [2022-11-20 12:01:06,593 INFO L226 Difference]: Without dead ends: 13286 [2022-11-20 12:01:06,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:01:06,748 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1915 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 3486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:06,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 1739 Invalid, 3486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [677 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 12:01:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13286 states. [2022-11-20 12:01:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13286 to 10567. [2022-11-20 12:01:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 7752 states have (on average 1.6042311661506707) internal successors, (12436), 8349 states have internal predecessors, (12436), 2323 states have call successors, (2323), 370 states have call predecessors, (2323), 491 states have return successors, (4249), 2313 states have call predecessors, (4249), 2313 states have call successors, (4249) [2022-11-20 12:01:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 19008 transitions. [2022-11-20 12:01:12,536 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 19008 transitions. Word has length 111 [2022-11-20 12:01:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:12,537 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 19008 transitions. [2022-11-20 12:01:12,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:01:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 19008 transitions. [2022-11-20 12:01:12,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 12:01:12,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:12,543 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:12,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:01:12,543 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash -902491661, now seen corresponding path program 1 times [2022-11-20 12:01:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:12,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120566771] [2022-11-20 12:01:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:12,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:01:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:01:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:01:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:01:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:01:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:01:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:01:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:01:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:01:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:01:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:01:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:01:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:01:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:13,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120566771] [2022-11-20 12:01:13,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120566771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:13,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:13,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:01:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100930807] [2022-11-20 12:01:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:01:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:01:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:01:13,085 INFO L87 Difference]: Start difference. First operand 10567 states and 19008 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:02:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:04,357 INFO L93 Difference]: Finished difference Result 46361 states and 95562 transitions. [2022-11-20 12:02:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:02:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-11-20 12:02:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:04,658 INFO L225 Difference]: With dead ends: 46361 [2022-11-20 12:02:04,658 INFO L226 Difference]: Without dead ends: 35812 [2022-11-20 12:02:04,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:02:04,779 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 3766 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 8756 mSolverCounterSat, 2412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 11168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2412 IncrementalHoareTripleChecker+Valid, 8756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:04,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3876 Valid, 4018 Invalid, 11168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2412 Valid, 8756 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2022-11-20 12:02:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35812 states. [2022-11-20 12:02:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35812 to 21127. [2022-11-20 12:02:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21127 states, 15505 states have (on average 1.600967429861335) internal successors, (24823), 16694 states have internal predecessors, (24823), 4630 states have call successors, (4630), 734 states have call predecessors, (4630), 991 states have return successors, (9610), 4624 states have call predecessors, (9610), 4612 states have call successors, (9610) [2022-11-20 12:02:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 39063 transitions. [2022-11-20 12:02:18,201 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 39063 transitions. Word has length 120 [2022-11-20 12:02:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:18,201 INFO L495 AbstractCegarLoop]: Abstraction has 21127 states and 39063 transitions. [2022-11-20 12:02:18,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:02:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 39063 transitions. [2022-11-20 12:02:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 12:02:18,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:18,209 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:18,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:02:18,209 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 466629917, now seen corresponding path program 1 times [2022-11-20 12:02:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:18,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039084769] [2022-11-20 12:02:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:18,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:02:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:02:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:02:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:02:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:02:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:02:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:02:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:02:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:02:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:02:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:02:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:02:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:18,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039084769] [2022-11-20 12:02:18,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039084769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:18,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:18,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:02:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248598463] [2022-11-20 12:02:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:02:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:02:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:02:18,729 INFO L87 Difference]: Start difference. First operand 21127 states and 39063 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)