./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:08:05,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:05,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:05,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:05,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:05,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:05,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:05,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:05,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:05,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:05,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:05,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:05,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:05,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:05,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:05,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:05,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:05,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:05,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:05,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:05,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:05,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:05,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:05,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:05,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:05,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:05,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:05,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:05,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:05,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:05,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:05,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:05,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:05,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:05,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:05,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:05,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:05,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:05,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:05,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:05,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:05,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:08:05,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:05,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:05,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:05,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:05,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:05,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:05,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:05,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:05,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:05,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:05,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:08:05,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:08:05,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:08:05,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:05,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:05,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:05,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:05,171 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:08:05,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:05,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:05,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:05,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:05,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:05,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:05,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:05,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:05,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:05,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:05,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:08:05,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:08:05,176 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:08:05,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:08:05,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:05,177 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_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 [2022-11-02 21:08:05,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:05,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:05,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:05,484 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:05,485 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:05,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2022-11-02 21:08:05,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/data/87a6fdeb6/47cd29daf43b46ebbf9d0058396066d8/FLAGa135b7b55 [2022-11-02 21:08:06,227 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:06,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2022-11-02 21:08:06,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/data/87a6fdeb6/47cd29daf43b46ebbf9d0058396066d8/FLAGa135b7b55 [2022-11-02 21:08:06,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/data/87a6fdeb6/47cd29daf43b46ebbf9d0058396066d8 [2022-11-02 21:08:06,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:06,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:06,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:06,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:06,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:06,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:06" (1/1) ... [2022-11-02 21:08:06,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85a507e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:06, skipping insertion in model container [2022-11-02 21:08:06,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:06" (1/1) ... [2022-11-02 21:08:06,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:06,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:07,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2022-11-02 21:08:07,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:07,318 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:07,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2022-11-02 21:08:07,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:07,489 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:07,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07 WrapperNode [2022-11-02 21:08:07,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:07,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:07,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:07,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:07,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,566 INFO L138 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 58, calls inlined = 49, statements flattened = 892 [2022-11-02 21:08:07,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:07,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:07,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:07,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:07,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:07,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:07,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:07,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:07,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:07,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:07,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:07,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-02 21:08:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-02 21:08:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-02 21:08:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-02 21:08:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-02 21:08:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-02 21:08:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-02 21:08:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-02 21:08:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-02 21:08:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-02 21:08:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-02 21:08:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-02 21:08:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-02 21:08:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-02 21:08:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-02 21:08:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-02 21:08:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-02 21:08:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-02 21:08:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-02 21:08:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:08:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-02 21:08:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-02 21:08:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-02 21:08:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-02 21:08:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-02 21:08:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-02 21:08:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-02 21:08:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-02 21:08:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-02 21:08:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-02 21:08:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-02 21:08:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-02 21:08:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-02 21:08:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-02 21:08:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:08:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-02 21:08:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-02 21:08:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:08,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:08,030 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:08,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:08,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:08,960 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:08:08,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:08 BoogieIcfgContainer [2022-11-02 21:08:08,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:08,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:08,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:08,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:08,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:06" (1/3) ... [2022-11-02 21:08:08,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a2a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:08, skipping insertion in model container [2022-11-02 21:08:08,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (2/3) ... [2022-11-02 21:08:08,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a2a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:08, skipping insertion in model container [2022-11-02 21:08:08,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:08" (3/3) ... [2022-11-02 21:08:08,976 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2022-11-02 21:08:08,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:08,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:09,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:09,092 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;@1d7efc1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:09,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 232 states have (on average 1.543103448275862) internal successors, (358), 234 states have internal predecessors, (358), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-02 21:08:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 21:08:09,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:09,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1024121513, now seen corresponding path program 1 times [2022-11-02 21:08:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467583426] [2022-11-02 21:08:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:08:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:08:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:08:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:08:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 21:08:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:08:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:08:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:08:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 21:08:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:09,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467583426] [2022-11-02 21:08:09,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467583426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:09,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836042402] [2022-11-02 21:08:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:09,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:09,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:08:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:10,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:08:10,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:08:10,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:10,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836042402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:10,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:10,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-02 21:08:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484387059] [2022-11-02 21:08:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:08:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:08:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:10,322 INFO L87 Difference]: Start difference. First operand has 291 states, 232 states have (on average 1.543103448275862) internal successors, (358), 234 states have internal predecessors, (358), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:10,398 INFO L93 Difference]: Finished difference Result 428 states and 630 transitions. [2022-11-02 21:08:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:08:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 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 92 [2022-11-02 21:08:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:10,414 INFO L225 Difference]: With dead ends: 428 [2022-11-02 21:08:10,414 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:08:10,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:10,425 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:10,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:08:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-02 21:08:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 226 states have (on average 1.5353982300884956) internal successors, (347), 227 states have internal predecessors, (347), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-02 21:08:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 426 transitions. [2022-11-02 21:08:10,519 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 426 transitions. Word has length 92 [2022-11-02 21:08:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:10,521 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 426 transitions. [2022-11-02 21:08:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 426 transitions. [2022-11-02 21:08:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:08:10,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:10,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:10,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:10,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:10,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2075349837, now seen corresponding path program 1 times [2022-11-02 21:08:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:10,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647459338] [2022-11-02 21:08:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:10,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:08:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:08:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:08:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 21:08:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:08:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:08:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:08:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 21:08:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:11,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647459338] [2022-11-02 21:08:11,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647459338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956016287] [2022-11-02 21:08:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:11,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:11,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:08:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:08:11,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:08:11,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:11,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956016287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:11,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:11,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 21:08:11,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427087575] [2022-11-02 21:08:11,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:11,575 INFO L87 Difference]: Start difference. First operand 284 states and 426 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:11,617 INFO L93 Difference]: Finished difference Result 418 states and 611 transitions. [2022-11-02 21:08:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:11,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 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 93 [2022-11-02 21:08:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:11,621 INFO L225 Difference]: With dead ends: 418 [2022-11-02 21:08:11,621 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 21:08:11,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:11,624 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:11,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 846 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 21:08:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2022-11-02 21:08:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 228 states have (on average 1.530701754385965) internal successors, (349), 229 states have internal predecessors, (349), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-02 21:08:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 428 transitions. [2022-11-02 21:08:11,648 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 428 transitions. Word has length 93 [2022-11-02 21:08:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:11,649 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 428 transitions. [2022-11-02 21:08:11,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 428 transitions. [2022-11-02 21:08:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:08:11,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:11,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:11,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:11,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 21:08:11,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1689423486, now seen corresponding path program 1 times [2022-11-02 21:08:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:11,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274217068] [2022-11-02 21:08:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:08:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:08:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:08:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:08:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:08:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 21:08:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:08:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 21:08:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:12,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:12,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274217068] [2022-11-02 21:08:12,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274217068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:12,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167683461] [2022-11-02 21:08:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:12,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:12,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:12,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:12,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:08:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:08:12,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:08:12,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:12,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167683461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:12,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:12,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 21:08:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382462482] [2022-11-02 21:08:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:12,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:12,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:12,531 INFO L87 Difference]: Start difference. First operand 286 states and 428 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:12,584 INFO L93 Difference]: Finished difference Result 602 states and 915 transitions. [2022-11-02 21:08:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 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 [2022-11-02 21:08:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:12,595 INFO L225 Difference]: With dead ends: 602 [2022-11-02 21:08:12,596 INFO L226 Difference]: Without dead ends: 343 [2022-11-02 21:08:12,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:12,601 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 107 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:12,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 821 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-02 21:08:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 335. [2022-11-02 21:08:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 266 states have (on average 1.5451127819548873) internal successors, (411), 267 states have internal predecessors, (411), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 21:08:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 512 transitions. [2022-11-02 21:08:12,636 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 512 transitions. Word has length 102 [2022-11-02 21:08:12,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:12,637 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 512 transitions. [2022-11-02 21:08:12,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 512 transitions. [2022-11-02 21:08:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:08:12,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:12,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:12,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 21:08:12,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:12,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:12,858 INFO L85 PathProgramCache]: Analyzing trace with hash 406530022, now seen corresponding path program 1 times [2022-11-02 21:08:12,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:12,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202925018] [2022-11-02 21:08:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:12,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:08:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:08:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:08:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:08:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:08:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:08:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 21:08:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 21:08:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202925018] [2022-11-02 21:08:13,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202925018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:13,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851741324] [2022-11-02 21:08:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:13,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:13,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:13,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:08:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:08:13,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:08:13,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:13,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851741324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:13,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:13,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-02 21:08:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163881775] [2022-11-02 21:08:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:13,538 INFO L87 Difference]: Start difference. First operand 335 states and 512 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:13,643 INFO L93 Difference]: Finished difference Result 661 states and 1014 transitions. [2022-11-02 21:08:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:13,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-11-02 21:08:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:13,649 INFO L225 Difference]: With dead ends: 661 [2022-11-02 21:08:13,649 INFO L226 Difference]: Without dead ends: 337 [2022-11-02 21:08:13,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:13,658 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 125 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:13,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1523 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-02 21:08:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-11-02 21:08:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 267 states have (on average 1.5430711610486891) internal successors, (412), 269 states have internal predecessors, (412), 51 states have call successors, (51), 17 states have call predecessors, (51), 18 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-11-02 21:08:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 515 transitions. [2022-11-02 21:08:13,713 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 515 transitions. Word has length 103 [2022-11-02 21:08:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:13,716 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 515 transitions. [2022-11-02 21:08:13,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 515 transitions. [2022-11-02 21:08:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 21:08:13,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:13,724 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:13,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:13,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:13,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash 33479798, now seen corresponding path program 1 times [2022-11-02 21:08:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:13,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730917261] [2022-11-02 21:08:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:13,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 21:08:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:08:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 21:08:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:08:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:08:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:08:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 21:08:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 21:08:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:08:14,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730917261] [2022-11-02 21:08:14,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730917261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384890269] [2022-11-02 21:08:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:14,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:14,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:14,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:14,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:08:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:14,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:08:14,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:14,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384890269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:14,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:14,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-02 21:08:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976794339] [2022-11-02 21:08:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:14,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:08:14,666 INFO L87 Difference]: Start difference. First operand 337 states and 515 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:14,755 INFO L93 Difference]: Finished difference Result 663 states and 1019 transitions. [2022-11-02 21:08:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-02 21:08:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:14,759 INFO L225 Difference]: With dead ends: 663 [2022-11-02 21:08:14,759 INFO L226 Difference]: Without dead ends: 339 [2022-11-02 21:08:14,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:08:14,762 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 124 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:14,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1512 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-02 21:08:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2022-11-02 21:08:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 268 states have (on average 1.541044776119403) internal successors, (413), 271 states have internal predecessors, (413), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-11-02 21:08:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 521 transitions. [2022-11-02 21:08:14,791 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 521 transitions. Word has length 104 [2022-11-02 21:08:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:14,791 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 521 transitions. [2022-11-02 21:08:14,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 521 transitions. [2022-11-02 21:08:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 21:08:14,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:14,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:14,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:15,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:15,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -851300096, now seen corresponding path program 1 times [2022-11-02 21:08:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:15,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338316940] [2022-11-02 21:08:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 21:08:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 21:08:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:08:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:08:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:08:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 21:08:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:08:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:15,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338316940] [2022-11-02 21:08:15,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338316940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:15,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:15,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:08:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723641854] [2022-11-02 21:08:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:15,254 INFO L87 Difference]: Start difference. First operand 339 states and 521 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:17,162 INFO L93 Difference]: Finished difference Result 759 states and 1172 transitions. [2022-11-02 21:08:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:17,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-02 21:08:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:17,166 INFO L225 Difference]: With dead ends: 759 [2022-11-02 21:08:17,167 INFO L226 Difference]: Without dead ends: 443 [2022-11-02 21:08:17,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:08:17,169 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1008 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:17,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1315 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:08:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-02 21:08:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 339. [2022-11-02 21:08:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 268 states have (on average 1.541044776119403) internal successors, (413), 271 states have internal predecessors, (413), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2022-11-02 21:08:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 520 transitions. [2022-11-02 21:08:17,211 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 520 transitions. Word has length 105 [2022-11-02 21:08:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:17,211 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 520 transitions. [2022-11-02 21:08:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 520 transitions. [2022-11-02 21:08:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 21:08:17,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:17,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:17,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:08:17,214 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:17,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash 855567918, now seen corresponding path program 2 times [2022-11-02 21:08:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:17,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297455879] [2022-11-02 21:08:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:08:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:08:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:08:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:08:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:08:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 21:08:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:08:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297455879] [2022-11-02 21:08:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297455879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:17,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:08:17,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822228297] [2022-11-02 21:08:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:17,464 INFO L87 Difference]: Start difference. First operand 339 states and 520 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:19,476 INFO L93 Difference]: Finished difference Result 761 states and 1175 transitions. [2022-11-02 21:08:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-11-02 21:08:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:19,481 INFO L225 Difference]: With dead ends: 761 [2022-11-02 21:08:19,481 INFO L226 Difference]: Without dead ends: 445 [2022-11-02 21:08:19,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:08:19,483 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1003 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:19,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1316 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:08:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-02 21:08:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 341. [2022-11-02 21:08:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 273 states have internal predecessors, (414), 51 states have call successors, (51), 17 states have call predecessors, (51), 20 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2022-11-02 21:08:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 523 transitions. [2022-11-02 21:08:19,547 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 523 transitions. Word has length 106 [2022-11-02 21:08:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:19,549 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 523 transitions. [2022-11-02 21:08:19,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 21:08:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 523 transitions. [2022-11-02 21:08:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-02 21:08:19,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:19,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:19,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:08:19,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -189507835, now seen corresponding path program 1 times [2022-11-02 21:08:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:19,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599833670] [2022-11-02 21:08:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:08:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:08:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 21:08:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:08:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 21:08:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:08:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:08:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599833670] [2022-11-02 21:08:19,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599833670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:19,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:08:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943968655] [2022-11-02 21:08:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:19,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:19,846 INFO L87 Difference]: Start difference. First operand 341 states and 523 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 21:08:22,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:22,487 INFO L93 Difference]: Finished difference Result 759 states and 1170 transitions. [2022-11-02 21:08:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:08:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-11-02 21:08:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:22,491 INFO L225 Difference]: With dead ends: 759 [2022-11-02 21:08:22,491 INFO L226 Difference]: Without dead ends: 445 [2022-11-02 21:08:22,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:22,494 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1114 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:22,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1614 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:08:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-02 21:08:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 341. [2022-11-02 21:08:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 273 states have internal predecessors, (414), 51 states have call successors, (51), 17 states have call predecessors, (51), 20 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-11-02 21:08:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 522 transitions. [2022-11-02 21:08:22,537 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 522 transitions. Word has length 107 [2022-11-02 21:08:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:22,538 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 522 transitions. [2022-11-02 21:08:22,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 21:08:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 522 transitions. [2022-11-02 21:08:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 21:08:22,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:22,541 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:22,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:08:22,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1159401631, now seen corresponding path program 2 times [2022-11-02 21:08:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:22,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978295283] [2022-11-02 21:08:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:08:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:08:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:08:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:08:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:08:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 21:08:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:08:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:22,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978295283] [2022-11-02 21:08:22,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978295283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:22,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:22,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:08:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038795051] [2022-11-02 21:08:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:22,860 INFO L87 Difference]: Start difference. First operand 341 states and 522 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 21:08:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:25,357 INFO L93 Difference]: Finished difference Result 761 states and 1176 transitions. [2022-11-02 21:08:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:08:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2022-11-02 21:08:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:25,362 INFO L225 Difference]: With dead ends: 761 [2022-11-02 21:08:25,362 INFO L226 Difference]: Without dead ends: 447 [2022-11-02 21:08:25,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:25,364 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1109 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:25,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1615 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:08:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-02 21:08:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 343. [2022-11-02 21:08:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 275 states have internal predecessors, (415), 51 states have call successors, (51), 17 states have call predecessors, (51), 21 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2022-11-02 21:08:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 528 transitions. [2022-11-02 21:08:25,402 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 528 transitions. Word has length 108 [2022-11-02 21:08:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:25,402 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 528 transitions. [2022-11-02 21:08:25,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 21:08:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 528 transitions. [2022-11-02 21:08:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 21:08:25,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:25,405 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:08:25,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2042043830, now seen corresponding path program 1 times [2022-11-02 21:08:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:25,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724665798] [2022-11-02 21:08:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:08:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 21:08:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 21:08:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 21:08:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:08:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:25,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724665798] [2022-11-02 21:08:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724665798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72158575] [2022-11-02 21:08:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:25,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:25,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:08:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:08:25,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:26,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:26,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72158575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:26,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:26,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-02 21:08:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009105871] [2022-11-02 21:08:26,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:26,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 21:08:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 21:08:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:08:26,154 INFO L87 Difference]: Start difference. First operand 343 states and 528 transitions. Second operand has 15 states, 14 states have (on average 8.428571428571429) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-02 21:08:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:30,165 INFO L93 Difference]: Finished difference Result 1440 states and 2404 transitions. [2022-11-02 21:08:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:08:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.428571428571429) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 109 [2022-11-02 21:08:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:30,173 INFO L225 Difference]: With dead ends: 1440 [2022-11-02 21:08:30,173 INFO L226 Difference]: Without dead ends: 1128 [2022-11-02 21:08:30,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:08:30,176 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 2758 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 5055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:30,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 3351 Invalid, 5055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:08:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-02 21:08:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 671. [2022-11-02 21:08:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 534 states have (on average 1.5842696629213484) internal successors, (846), 539 states have internal predecessors, (846), 115 states have call successors, (115), 17 states have call predecessors, (115), 21 states have return successors, (136), 114 states have call predecessors, (136), 114 states have call successors, (136) [2022-11-02 21:08:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1097 transitions. [2022-11-02 21:08:30,263 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1097 transitions. Word has length 109 [2022-11-02 21:08:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:30,263 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1097 transitions. [2022-11-02 21:08:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.428571428571429) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-02 21:08:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1097 transitions. [2022-11-02 21:08:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:08:30,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:30,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:30,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:30,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ad579a-377f-4e10-85f1-b36134249950/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:08:30,481 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1028197055, now seen corresponding path program 1 times [2022-11-02 21:08:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:30,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749130958] [2022-11-02 21:08:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:08:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 21:08:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 21:08:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:08:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 21:08:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:30,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749130958] [2022-11-02 21:08:30,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749130958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:30,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:30,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923351020] [2022-11-02 21:08:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:30,607 INFO L87 Difference]: Start difference. First operand 671 states and 1097 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:32,046 INFO L93 Difference]: Finished difference Result 1676 states and 2807 transitions. [2022-11-02 21:08:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:32,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-02 21:08:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:32,053 INFO L225 Difference]: With dead ends: 1676 [2022-11-02 21:08:32,054 INFO L226 Difference]: Without dead ends: 1083 [2022-11-02 21:08:32,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:32,058 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 997 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1166 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-11-02 21:08:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 971. [2022-11-02 21:08:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 770 states have (on average 1.5987012987012987) internal successors, (1231), 775 states have internal predecessors, (1231), 179 states have call successors, (179), 17 states have call predecessors, (179), 21 states have return successors, (210), 178 states have call predecessors, (210), 178 states have call successors, (210) [2022-11-02 21:08:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1620 transitions. [2022-11-02 21:08:32,235 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1620 transitions. Word has length 112 [2022-11-02 21:08:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:32,236 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1620 transitions. [2022-11-02 21:08:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1620 transitions. [2022-11-02 21:08:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 21:08:32,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:32,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:08:32,242 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 342356814, now seen corresponding path program 1 times [2022-11-02 21:08:32,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884689707] [2022-11-02 21:08:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:08:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:08:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:08:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 21:08:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:08:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 21:08:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884689707] [2022-11-02 21:08:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884689707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:32,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:32,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706353583] [2022-11-02 21:08:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:32,369 INFO L87 Difference]: Start difference. First operand 971 states and 1620 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:33,862 INFO L93 Difference]: Finished difference Result 2416 states and 4087 transitions. [2022-11-02 21:08:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:33,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-02 21:08:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:33,873 INFO L225 Difference]: With dead ends: 2416 [2022-11-02 21:08:33,873 INFO L226 Difference]: Without dead ends: 1576 [2022-11-02 21:08:33,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:33,878 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 995 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1163 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2022-11-02 21:08:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1464. [2022-11-02 21:08:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1168 states have (on average 1.6035958904109588) internal successors, (1873), 1173 states have internal predecessors, (1873), 274 states have call successors, (274), 17 states have call predecessors, (274), 21 states have return successors, (305), 273 states have call predecessors, (305), 273 states have call successors, (305) [2022-11-02 21:08:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2452 transitions. [2022-11-02 21:08:34,086 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2452 transitions. Word has length 113 [2022-11-02 21:08:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:34,086 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 2452 transitions. [2022-11-02 21:08:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2452 transitions. [2022-11-02 21:08:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 21:08:34,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:34,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:34,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:08:34,095 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 913875667, now seen corresponding path program 1 times [2022-11-02 21:08:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:34,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226618599] [2022-11-02 21:08:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:08:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:08:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:08:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:08:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:08:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:34,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:34,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226618599] [2022-11-02 21:08:34,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226618599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:34,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:34,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493100751] [2022-11-02 21:08:34,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:34,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:34,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:34,226 INFO L87 Difference]: Start difference. First operand 1464 states and 2452 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:35,842 INFO L93 Difference]: Finished difference Result 3518 states and 6005 transitions. [2022-11-02 21:08:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-02 21:08:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:35,863 INFO L225 Difference]: With dead ends: 3518 [2022-11-02 21:08:35,864 INFO L226 Difference]: Without dead ends: 2320 [2022-11-02 21:08:35,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:35,874 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 993 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:35,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1157 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:08:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-11-02 21:08:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2208. [2022-11-02 21:08:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1789 states have (on average 1.6076020122973729) internal successors, (2876), 1794 states have internal predecessors, (2876), 397 states have call successors, (397), 17 states have call predecessors, (397), 21 states have return successors, (444), 396 states have call predecessors, (444), 396 states have call successors, (444) [2022-11-02 21:08:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3717 transitions. [2022-11-02 21:08:36,231 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3717 transitions. Word has length 114 [2022-11-02 21:08:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:36,232 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 3717 transitions. [2022-11-02 21:08:36,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3717 transitions. [2022-11-02 21:08:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-02 21:08:36,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:36,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:36,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:08:36,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1746348205, now seen corresponding path program 1 times [2022-11-02 21:08:36,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:36,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406325503] [2022-11-02 21:08:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:08:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:08:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:08:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 21:08:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 21:08:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 21:08:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:36,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:36,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406325503] [2022-11-02 21:08:36,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406325503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:36,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:36,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163085941] [2022-11-02 21:08:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:36,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:36,369 INFO L87 Difference]: Start difference. First operand 2208 states and 3717 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:38,010 INFO L93 Difference]: Finished difference Result 5227 states and 8985 transitions. [2022-11-02 21:08:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:38,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-02 21:08:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:38,032 INFO L225 Difference]: With dead ends: 5227 [2022-11-02 21:08:38,032 INFO L226 Difference]: Without dead ends: 3504 [2022-11-02 21:08:38,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:38,039 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 991 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:38,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1158 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2022-11-02 21:08:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3392. [2022-11-02 21:08:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 2794 states have (on average 1.6098783106657122) internal successors, (4498), 2799 states have internal predecessors, (4498), 576 states have call successors, (576), 17 states have call predecessors, (576), 21 states have return successors, (649), 575 states have call predecessors, (649), 575 states have call successors, (649) [2022-11-02 21:08:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 5723 transitions. [2022-11-02 21:08:38,487 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 5723 transitions. Word has length 115 [2022-11-02 21:08:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:38,488 INFO L495 AbstractCegarLoop]: Abstraction has 3392 states and 5723 transitions. [2022-11-02 21:08:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 5723 transitions. [2022-11-02 21:08:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:08:38,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:38,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:38,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:08:38,499 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 81862775, now seen corresponding path program 1 times [2022-11-02 21:08:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:38,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816300235] [2022-11-02 21:08:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 21:08:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:08:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 21:08:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 21:08:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:08:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:38,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:38,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816300235] [2022-11-02 21:08:38,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816300235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:38,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:38,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:38,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536394871] [2022-11-02 21:08:38,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:38,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:38,637 INFO L87 Difference]: Start difference. First operand 3392 states and 5723 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:40,422 INFO L93 Difference]: Finished difference Result 8300 states and 14301 transitions. [2022-11-02 21:08:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-11-02 21:08:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:40,453 INFO L225 Difference]: With dead ends: 8300 [2022-11-02 21:08:40,453 INFO L226 Difference]: Without dead ends: 5645 [2022-11-02 21:08:40,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:40,463 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 989 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1173 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2022-11-02 21:08:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5533. [2022-11-02 21:08:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 4559 states have (on average 1.6021057249396797) internal successors, (7304), 4564 states have internal predecessors, (7304), 952 states have call successors, (952), 17 states have call predecessors, (952), 21 states have return successors, (1069), 951 states have call predecessors, (1069), 951 states have call successors, (1069) [2022-11-02 21:08:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 9325 transitions. [2022-11-02 21:08:41,255 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 9325 transitions. Word has length 116 [2022-11-02 21:08:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:41,256 INFO L495 AbstractCegarLoop]: Abstraction has 5533 states and 9325 transitions. [2022-11-02 21:08:41,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 9325 transitions. [2022-11-02 21:08:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 21:08:41,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:41,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:41,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:08:41,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -448101623, now seen corresponding path program 1 times [2022-11-02 21:08:41,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:41,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111161610] [2022-11-02 21:08:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:08:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:08:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 21:08:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 21:08:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 21:08:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:41,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111161610] [2022-11-02 21:08:41,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111161610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:41,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:41,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278876363] [2022-11-02 21:08:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:41,390 INFO L87 Difference]: Start difference. First operand 5533 states and 9325 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:43,582 INFO L93 Difference]: Finished difference Result 13722 states and 23602 transitions. [2022-11-02 21:08:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:43,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-11-02 21:08:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:43,629 INFO L225 Difference]: With dead ends: 13722 [2022-11-02 21:08:43,630 INFO L226 Difference]: Without dead ends: 9328 [2022-11-02 21:08:43,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:43,643 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 987 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1169 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:08:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2022-11-02 21:08:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9216. [2022-11-02 21:08:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9216 states, 7636 states have (on average 1.5991356731272919) internal successors, (12211), 7641 states have internal predecessors, (12211), 1558 states have call successors, (1558), 17 states have call predecessors, (1558), 21 states have return successors, (1753), 1557 states have call predecessors, (1753), 1557 states have call successors, (1753) [2022-11-02 21:08:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9216 states to 9216 states and 15522 transitions. [2022-11-02 21:08:44,880 INFO L78 Accepts]: Start accepts. Automaton has 9216 states and 15522 transitions. Word has length 117 [2022-11-02 21:08:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:44,880 INFO L495 AbstractCegarLoop]: Abstraction has 9216 states and 15522 transitions. [2022-11-02 21:08:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states and 15522 transitions. [2022-11-02 21:08:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 21:08:44,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:44,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:08:44,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1807777429, now seen corresponding path program 1 times [2022-11-02 21:08:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:44,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194514580] [2022-11-02 21:08:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:08:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:08:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:08:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 21:08:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 21:08:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:45,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194514580] [2022-11-02 21:08:45,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194514580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:45,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:45,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331338346] [2022-11-02 21:08:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:45,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:45,049 INFO L87 Difference]: Start difference. First operand 9216 states and 15522 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:47,827 INFO L93 Difference]: Finished difference Result 23906 states and 41043 transitions. [2022-11-02 21:08:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:47,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-11-02 21:08:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:47,897 INFO L225 Difference]: With dead ends: 23906 [2022-11-02 21:08:47,897 INFO L226 Difference]: Without dead ends: 16281 [2022-11-02 21:08:47,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:47,921 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 985 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:47,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1200 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16281 states. [2022-11-02 21:08:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16281 to 16169. [2022-11-02 21:08:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16169 states, 13386 states have (on average 1.5897953085313015) internal successors, (21281), 13391 states have internal predecessors, (21281), 2761 states have call successors, (2761), 17 states have call predecessors, (2761), 21 states have return successors, (3100), 2760 states have call predecessors, (3100), 2760 states have call successors, (3100) [2022-11-02 21:08:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16169 states to 16169 states and 27142 transitions. [2022-11-02 21:08:50,180 INFO L78 Accepts]: Start accepts. Automaton has 16169 states and 27142 transitions. Word has length 118 [2022-11-02 21:08:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:50,180 INFO L495 AbstractCegarLoop]: Abstraction has 16169 states and 27142 transitions. [2022-11-02 21:08:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16169 states and 27142 transitions. [2022-11-02 21:08:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 21:08:50,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:50,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:50,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:08:50,204 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash 642347208, now seen corresponding path program 1 times [2022-11-02 21:08:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:50,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090787977] [2022-11-02 21:08:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:08:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 21:08:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 21:08:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:08:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 21:08:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:08:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:50,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090787977] [2022-11-02 21:08:50,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090787977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:50,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:50,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886748795] [2022-11-02 21:08:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:50,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:50,341 INFO L87 Difference]: Start difference. First operand 16169 states and 27142 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:55,165 INFO L93 Difference]: Finished difference Result 42872 states and 73440 transitions. [2022-11-02 21:08:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-02 21:08:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:55,306 INFO L225 Difference]: With dead ends: 42872 [2022-11-02 21:08:55,306 INFO L226 Difference]: Without dead ends: 28936 [2022-11-02 21:08:55,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:55,348 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 983 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:55,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1161 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:08:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28936 states. [2022-11-02 21:08:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28936 to 28824. [2022-11-02 21:08:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28824 states, 24002 states have (on average 1.585201233230564) internal successors, (38048), 24007 states have internal predecessors, (38048), 4800 states have call successors, (4800), 17 states have call predecessors, (4800), 21 states have return successors, (5413), 4799 states have call predecessors, (5413), 4799 states have call successors, (5413) [2022-11-02 21:08:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 48261 transitions. [2022-11-02 21:08:58,653 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 48261 transitions. Word has length 119 [2022-11-02 21:08:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:58,654 INFO L495 AbstractCegarLoop]: Abstraction has 28824 states and 48261 transitions. [2022-11-02 21:08:58,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:08:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 48261 transitions. [2022-11-02 21:08:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 21:08:58,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:58,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:08:58,678 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1660997549, now seen corresponding path program 1 times [2022-11-02 21:08:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235380509] [2022-11-02 21:08:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:08:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:08:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 21:08:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 21:08:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:08:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 21:08:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 21:08:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:58,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235380509] [2022-11-02 21:08:58,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235380509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:58,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:58,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760393509] [2022-11-02 21:08:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:58,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:58,796 INFO L87 Difference]: Start difference. First operand 28824 states and 48261 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:09:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:05,379 INFO L93 Difference]: Finished difference Result 78634 states and 133804 transitions. [2022-11-02 21:09:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-11-02 21:09:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:05,617 INFO L225 Difference]: With dead ends: 78634 [2022-11-02 21:09:05,617 INFO L226 Difference]: Without dead ends: 52815 [2022-11-02 21:09:05,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:09:05,696 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 981 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:05,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1169 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:09:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52815 states. [2022-11-02 21:09:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52815 to 52703. [2022-11-02 21:09:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52703 states, 44166 states have (on average 1.5792917628945342) internal successors, (69751), 44171 states have internal predecessors, (69751), 8515 states have call successors, (8515), 17 states have call predecessors, (8515), 21 states have return successors, (9660), 8514 states have call predecessors, (9660), 8514 states have call successors, (9660) [2022-11-02 21:09:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52703 states to 52703 states and 87926 transitions. [2022-11-02 21:09:12,509 INFO L78 Accepts]: Start accepts. Automaton has 52703 states and 87926 transitions. Word has length 120 [2022-11-02 21:09:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:12,510 INFO L495 AbstractCegarLoop]: Abstraction has 52703 states and 87926 transitions. [2022-11-02 21:09:12,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 21:09:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 52703 states and 87926 transitions. [2022-11-02 21:09:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-02 21:09:12,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:12,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:09:12,537 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash -884455480, now seen corresponding path program 1 times [2022-11-02 21:09:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:12,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212266885] [2022-11-02 21:09:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:09:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:09:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:09:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:09:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:09:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:09:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 21:09:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 21:09:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 21:09:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 21:09:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:09:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 21:09:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:09:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:12,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212266885] [2022-11-02 21:09:12,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212266885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:12,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:09:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775722262] [2022-11-02 21:09:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:12,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:12,664 INFO L87 Difference]: Start difference. First operand 52703 states and 87926 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)