./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8 --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 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 --- 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-e04fb08 [2022-11-16 11:16:13,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:16:13,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:16:13,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:16:13,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:16:13,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:16:13,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:16:13,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:16:13,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:16:13,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:16:13,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:16:13,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:16:13,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:16:13,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:16:13,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:16:13,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:16:13,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:16:13,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:16:13,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:16:13,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:16:13,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:16:13,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:16:13,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:16:13,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:16:13,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:16:13,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:16:13,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:16:13,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:16:13,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:16:13,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:16:13,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:16:13,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:16:13,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:16:13,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:16:13,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:16:13,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:16:13,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:16:13,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:16:13,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:16:13,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:16:13,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:16:13,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:16:13,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:16:13,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:16:13,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:16:13,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:16:13,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:16:13,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:16:13,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:16:13,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:16:13,774 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:16:13,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:16:13,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:16:13,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:16:13,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:16:13,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:16:13,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:16:13,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:16:13,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:16:13,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:16:13,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:16:13,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:16:13,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:16:13,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:16:13,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:16:13,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:16:13,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:16:13,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:16:13,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:16:13,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:16:13,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:16:13,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:16:13,781 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:16:13,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:16:13,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:16:13,782 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_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 [2022-11-16 11:16:14,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:16:14,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:16:14,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:16:14,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:16:14,168 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:16:14,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2022-11-16 11:16:14,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/data/316a3eda1/9a4f57c8c7b643afa3a8b2015afc7f69/FLAG6dd94b158 [2022-11-16 11:16:14,948 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:16:14,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2022-11-16 11:16:14,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/data/316a3eda1/9a4f57c8c7b643afa3a8b2015afc7f69/FLAG6dd94b158 [2022-11-16 11:16:15,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/data/316a3eda1/9a4f57c8c7b643afa3a8b2015afc7f69 [2022-11-16 11:16:15,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:16:15,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:16:15,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:16:15,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:16:15,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:16:15,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:16:15" (1/1) ... [2022-11-16 11:16:15,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7698ad7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:15, skipping insertion in model container [2022-11-16 11:16:15,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:16:15" (1/1) ... [2022-11-16 11:16:15,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:16:15,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:16:15,771 WARN L229 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_c19a8d83-b504-48bd-9963-ad7614e708af/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-11-16 11:16:15,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:16:15,883 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:16:16,002 WARN L229 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_c19a8d83-b504-48bd-9963-ad7614e708af/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-11-16 11:16:16,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:16:16,044 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:16:16,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16 WrapperNode [2022-11-16 11:16:16,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:16:16,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:16:16,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:16:16,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:16:16,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,139 INFO L138 Inliner]: procedures = 123, calls = 193, calls flagged for inlining = 49, calls inlined = 39, statements flattened = 807 [2022-11-16 11:16:16,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:16:16,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:16:16,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:16:16,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:16:16,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:16:16,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:16:16,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:16:16,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:16:16,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (1/1) ... [2022-11-16 11:16:16,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:16:16,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:16,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:16:16,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:16:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 11:16:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 11:16:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 11:16:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 11:16:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 11:16:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 11:16:16,350 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 11:16:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 11:16:16,350 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 11:16:16,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 11:16:16,350 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 11:16:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 11:16:16,351 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 11:16:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 11:16:16,351 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 11:16:16,351 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 11:16:16,351 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 11:16:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 11:16:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 11:16:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:16:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 11:16:16,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 11:16:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 11:16:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 11:16:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 11:16:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 11:16:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 11:16:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 11:16:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 11:16:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 11:16:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 11:16:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 11:16:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 11:16:16,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 11:16:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:16:16,354 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 11:16:16,355 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 11:16:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:16:16,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:16:16,540 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:16:16,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:16:17,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:16:17,465 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:16:17,465 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:16:17,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:16:17 BoogieIcfgContainer [2022-11-16 11:16:17,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:16:17,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:16:17,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:16:17,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:16:17,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:16:15" (1/3) ... [2022-11-16 11:16:17,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3f1410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:16:17, skipping insertion in model container [2022-11-16 11:16:17,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:16" (2/3) ... [2022-11-16 11:16:17,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3f1410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:16:17, skipping insertion in model container [2022-11-16 11:16:17,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:16:17" (3/3) ... [2022-11-16 11:16:17,481 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2022-11-16 11:16:17,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:16:17,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:16:17,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:16:17,612 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;@238479b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:16:17,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:16:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 216 states have internal predecessors, (326), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-16 11:16:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 11:16:17,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:17,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:17,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 950381241, now seen corresponding path program 1 times [2022-11-16 11:16:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:17,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777688899] [2022-11-16 11:16:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:16:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:16:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:16:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:16:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:16:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:16:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:16:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:16:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:16:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:16:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:16:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 11:16:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:18,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777688899] [2022-11-16 11:16:18,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777688899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:18,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173025357] [2022-11-16 11:16:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:18,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:18,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:18,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:16:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:16:18,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:16:19,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:16:19,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173025357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:19,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:16:19,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-16 11:16:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470278036] [2022-11-16 11:16:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:16:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:16:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:16:19,109 INFO L87 Difference]: Start difference. First operand has 274 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 216 states have internal predecessors, (326), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:19,185 INFO L93 Difference]: Finished difference Result 399 states and 586 transitions. [2022-11-16 11:16:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:16:19,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2022-11-16 11:16:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:19,201 INFO L225 Difference]: With dead ends: 399 [2022-11-16 11:16:19,202 INFO L226 Difference]: Without dead ends: 267 [2022-11-16 11:16:19,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:16:19,210 INFO L413 NwaCegarLoop]: 408 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, 408 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 [2022-11-16 11:16:19,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-16 11:16:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-16 11:16:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 206 states have (on average 1.529126213592233) internal successors, (315), 209 states have internal predecessors, (315), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-16 11:16:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 400 transitions. [2022-11-16 11:16:19,280 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 400 transitions. Word has length 111 [2022-11-16 11:16:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:19,282 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 400 transitions. [2022-11-16 11:16:19,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 400 transitions. [2022-11-16 11:16:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 11:16:19,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:19,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:19,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:16:19,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:16:19,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:19,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash -347138604, now seen corresponding path program 1 times [2022-11-16 11:16:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921394887] [2022-11-16 11:16:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:16:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:16:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:16:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:16:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:16:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:16:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:16:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:16:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:16:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:16:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:16:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 11:16:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:19,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921394887] [2022-11-16 11:16:19,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921394887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:19,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848379052] [2022-11-16 11:16:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:19,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:19,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:20,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:20,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:16:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:16:20,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:16:20,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:16:20,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848379052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:20,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:16:20,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:16:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904801918] [2022-11-16 11:16:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:20,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:16:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:16:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:16:20,362 INFO L87 Difference]: Start difference. First operand 267 states and 400 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:20,412 INFO L93 Difference]: Finished difference Result 389 states and 567 transitions. [2022-11-16 11:16:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:16:20,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-11-16 11:16:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:20,417 INFO L225 Difference]: With dead ends: 389 [2022-11-16 11:16:20,417 INFO L226 Difference]: Without dead ends: 270 [2022-11-16 11:16:20,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:16:20,419 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 794 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 [2022-11-16 11:16:20,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 794 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-16 11:16:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2022-11-16 11:16:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 211 states have internal predecessors, (317), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-16 11:16:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 402 transitions. [2022-11-16 11:16:20,459 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 402 transitions. Word has length 112 [2022-11-16 11:16:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:20,460 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 402 transitions. [2022-11-16 11:16:20,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 402 transitions. [2022-11-16 11:16:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:16:20,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:20,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:20,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:20,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1661890211, now seen corresponding path program 1 times [2022-11-16 11:16:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:20,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028660430] [2022-11-16 11:16:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:16:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:16:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:16:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:16:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:16:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:16:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:16:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:16:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:16:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:16:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:16:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:16:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028660430] [2022-11-16 11:16:20,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028660430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:20,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908136935] [2022-11-16 11:16:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:20,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:20,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:16:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:16:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:16:21,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:16:21,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908136935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:21,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:16:21,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:16:21,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686304384] [2022-11-16 11:16:21,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:21,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:16:21,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:16:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:16:21,319 INFO L87 Difference]: Start difference. First operand 269 states and 402 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:21,354 INFO L93 Difference]: Finished difference Result 563 states and 855 transitions. [2022-11-16 11:16:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:16:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-11-16 11:16:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:21,359 INFO L225 Difference]: With dead ends: 563 [2022-11-16 11:16:21,359 INFO L226 Difference]: Without dead ends: 321 [2022-11-16 11:16:21,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:16:21,362 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 99 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 768 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 [2022-11-16 11:16:21,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 768 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-16 11:16:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 313. [2022-11-16 11:16:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 241 states have (on average 1.5394190871369295) internal successors, (371), 244 states have internal predecessors, (371), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-16 11:16:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 478 transitions. [2022-11-16 11:16:21,389 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 478 transitions. Word has length 118 [2022-11-16 11:16:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:21,390 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 478 transitions. [2022-11-16 11:16:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 478 transitions. [2022-11-16 11:16:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 11:16:21,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:21,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:21,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:16:21,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1202284878, now seen corresponding path program 1 times [2022-11-16 11:16:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:21,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559907363] [2022-11-16 11:16:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:16:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:16:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:16:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:16:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:16:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:16:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:16:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:16:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:16:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:16:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:16:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:16:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559907363] [2022-11-16 11:16:21,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559907363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:21,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073387343] [2022-11-16 11:16:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:21,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:21,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:16:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:16:22,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:16:22,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:16:22,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073387343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:22,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:16:22,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-16 11:16:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961618644] [2022-11-16 11:16:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:22,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:16:22,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:16:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:16:22,290 INFO L87 Difference]: Start difference. First operand 313 states and 478 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:22,414 INFO L93 Difference]: Finished difference Result 617 states and 946 transitions. [2022-11-16 11:16:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:16:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-11-16 11:16:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:22,422 INFO L225 Difference]: With dead ends: 617 [2022-11-16 11:16:22,422 INFO L226 Difference]: Without dead ends: 315 [2022-11-16 11:16:22,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:16:22,429 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 117 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1427 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 [2022-11-16 11:16:22,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1427 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-16 11:16:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-16 11:16:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 242 states have (on average 1.537190082644628) internal successors, (372), 246 states have internal predecessors, (372), 54 states have call successors, (54), 17 states have call predecessors, (54), 18 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2022-11-16 11:16:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 481 transitions. [2022-11-16 11:16:22,477 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 481 transitions. Word has length 119 [2022-11-16 11:16:22,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:22,479 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 481 transitions. [2022-11-16 11:16:22,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 481 transitions. [2022-11-16 11:16:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:16:22,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:22,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:22,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:22,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1757606202, now seen corresponding path program 1 times [2022-11-16 11:16:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:22,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780499073] [2022-11-16 11:16:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:16:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:16:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:16:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:16:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:16:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:16:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:16:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:16:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:16:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:16:22,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:22,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780499073] [2022-11-16 11:16:22,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780499073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:22,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702372047] [2022-11-16 11:16:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:22,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:22,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:22,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:22,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:16:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:16:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:16:23,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:16:23,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702372047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:23,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:16:23,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-16 11:16:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323115809] [2022-11-16 11:16:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:16:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:16:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:16:23,377 INFO L87 Difference]: Start difference. First operand 315 states and 481 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:23,500 INFO L93 Difference]: Finished difference Result 619 states and 951 transitions. [2022-11-16 11:16:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:16:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-11-16 11:16:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:23,504 INFO L225 Difference]: With dead ends: 619 [2022-11-16 11:16:23,504 INFO L226 Difference]: Without dead ends: 317 [2022-11-16 11:16:23,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:16:23,507 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 116 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1416 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 [2022-11-16 11:16:23,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1416 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-16 11:16:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2022-11-16 11:16:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.5349794238683128) internal successors, (373), 248 states have internal predecessors, (373), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2022-11-16 11:16:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 487 transitions. [2022-11-16 11:16:23,534 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 487 transitions. Word has length 120 [2022-11-16 11:16:23,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:23,535 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 487 transitions. [2022-11-16 11:16:23,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 487 transitions. [2022-11-16 11:16:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:16:23,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:23,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:23,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:23,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:23,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:23,747 INFO L85 PathProgramCache]: Analyzing trace with hash -957882069, now seen corresponding path program 1 times [2022-11-16 11:16:23,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:23,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434360452] [2022-11-16 11:16:23,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:23,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:16:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:16:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:16:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:16:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:16:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:16:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 11:16:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 11:16:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:24,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:16:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:16:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:24,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434360452] [2022-11-16 11:16:24,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434360452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:24,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:24,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:16:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668045514] [2022-11-16 11:16:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:24,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:16:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:16:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:16:24,012 INFO L87 Difference]: Start difference. First operand 317 states and 487 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:25,603 INFO L93 Difference]: Finished difference Result 665 states and 1026 transitions. [2022-11-16 11:16:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:16:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-11-16 11:16:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:25,607 INFO L225 Difference]: With dead ends: 665 [2022-11-16 11:16:25,607 INFO L226 Difference]: Without dead ends: 371 [2022-11-16 11:16:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:16:25,609 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 703 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 814 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 11:16:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-16 11:16:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 317. [2022-11-16 11:16:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.5349794238683128) internal successors, (373), 248 states have internal predecessors, (373), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-11-16 11:16:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 486 transitions. [2022-11-16 11:16:25,659 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 486 transitions. Word has length 121 [2022-11-16 11:16:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:25,660 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 486 transitions. [2022-11-16 11:16:25,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 486 transitions. [2022-11-16 11:16:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 11:16:25,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:25,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:25,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:16:25,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:25,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1705612417, now seen corresponding path program 2 times [2022-11-16 11:16:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:25,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744527180] [2022-11-16 11:16:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:25,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:16:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:16:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:16:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:16:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:16:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:16:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:16:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:16:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:16:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744527180] [2022-11-16 11:16:25,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744527180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:25,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:16:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099566917] [2022-11-16 11:16:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:25,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:16:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:16:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:16:25,945 INFO L87 Difference]: Start difference. First operand 317 states and 486 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:27,424 INFO L93 Difference]: Finished difference Result 667 states and 1029 transitions. [2022-11-16 11:16:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:16:27,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2022-11-16 11:16:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:27,428 INFO L225 Difference]: With dead ends: 667 [2022-11-16 11:16:27,428 INFO L226 Difference]: Without dead ends: 373 [2022-11-16 11:16:27,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:16:27,431 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 699 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:27,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 814 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:16:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-16 11:16:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 319. [2022-11-16 11:16:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 244 states have (on average 1.5327868852459017) internal successors, (374), 250 states have internal predecessors, (374), 54 states have call successors, (54), 17 states have call predecessors, (54), 20 states have return successors, (61), 53 states have call predecessors, (61), 53 states have call successors, (61) [2022-11-16 11:16:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 489 transitions. [2022-11-16 11:16:27,466 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 489 transitions. Word has length 122 [2022-11-16 11:16:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:27,467 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 489 transitions. [2022-11-16 11:16:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:16:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 489 transitions. [2022-11-16 11:16:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 11:16:27,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:27,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:27,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:16:27,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash -943611344, now seen corresponding path program 1 times [2022-11-16 11:16:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:27,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260465180] [2022-11-16 11:16:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:27,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:16:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:16:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:16:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:16:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 11:16:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:16:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:16:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 11:16:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:16:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:27,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260465180] [2022-11-16 11:16:27,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260465180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:27,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:27,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:16:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529201466] [2022-11-16 11:16:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:16:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:16:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:16:27,756 INFO L87 Difference]: Start difference. First operand 319 states and 489 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 11:16:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:29,867 INFO L93 Difference]: Finished difference Result 665 states and 1024 transitions. [2022-11-16 11:16:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:16:29,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2022-11-16 11:16:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:29,872 INFO L225 Difference]: With dead ends: 665 [2022-11-16 11:16:29,872 INFO L226 Difference]: Without dead ends: 373 [2022-11-16 11:16:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:16:29,875 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 814 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1100 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 11:16:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-16 11:16:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 319. [2022-11-16 11:16:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 244 states have (on average 1.5327868852459017) internal successors, (374), 250 states have internal predecessors, (374), 54 states have call successors, (54), 17 states have call predecessors, (54), 20 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2022-11-16 11:16:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 488 transitions. [2022-11-16 11:16:29,919 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 488 transitions. Word has length 123 [2022-11-16 11:16:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:29,919 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 488 transitions. [2022-11-16 11:16:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 11:16:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 488 transitions. [2022-11-16 11:16:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 11:16:29,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:29,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:29,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:16:29,924 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:29,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash 334111285, now seen corresponding path program 2 times [2022-11-16 11:16:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:29,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772490203] [2022-11-16 11:16:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:16:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:16:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:16:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 11:16:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:16:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:16:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:16:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:16:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:16:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:30,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772490203] [2022-11-16 11:16:30,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772490203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:30,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:30,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:16:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627909469] [2022-11-16 11:16:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:16:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:16:30,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:16:30,190 INFO L87 Difference]: Start difference. First operand 319 states and 488 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 11:16:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:32,291 INFO L93 Difference]: Finished difference Result 667 states and 1030 transitions. [2022-11-16 11:16:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:16:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2022-11-16 11:16:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:32,299 INFO L225 Difference]: With dead ends: 667 [2022-11-16 11:16:32,299 INFO L226 Difference]: Without dead ends: 375 [2022-11-16 11:16:32,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:16:32,303 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 810 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:32,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1100 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 11:16:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-16 11:16:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 321. [2022-11-16 11:16:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 245 states have (on average 1.530612244897959) internal successors, (375), 252 states have internal predecessors, (375), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (65), 53 states have call predecessors, (65), 53 states have call successors, (65) [2022-11-16 11:16:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 494 transitions. [2022-11-16 11:16:32,341 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 494 transitions. Word has length 124 [2022-11-16 11:16:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:32,343 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 494 transitions. [2022-11-16 11:16:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-16 11:16:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 494 transitions. [2022-11-16 11:16:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 11:16:32,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:32,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:16:32,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1355788075, now seen corresponding path program 1 times [2022-11-16 11:16:32,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:32,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23313699] [2022-11-16 11:16:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:32,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:16:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:16:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:16:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:16:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:16:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:16:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:16:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 11:16:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23313699] [2022-11-16 11:16:32,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23313699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457473449] [2022-11-16 11:16:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:32,543 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:32,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:16:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:16:32,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:32,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:16:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:32,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457473449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:16:32,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:16:32,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-16 11:16:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296751693] [2022-11-16 11:16:32,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:16:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:16:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:32,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:16:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:32,989 INFO L87 Difference]: Start difference. First operand 321 states and 494 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:16:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:34,894 INFO L93 Difference]: Finished difference Result 821 states and 1328 transitions. [2022-11-16 11:16:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:16:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 125 [2022-11-16 11:16:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:34,901 INFO L225 Difference]: With dead ends: 821 [2022-11-16 11:16:34,901 INFO L226 Difference]: Without dead ends: 702 [2022-11-16 11:16:34,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:16:34,903 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 974 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:34,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1238 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 11:16:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-16 11:16:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 624. [2022-11-16 11:16:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 484 states have (on average 1.5971074380165289) internal successors, (773), 491 states have internal predecessors, (773), 118 states have call successors, (118), 17 states have call predecessors, (118), 21 states have return successors, (139), 117 states have call predecessors, (139), 117 states have call successors, (139) [2022-11-16 11:16:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1030 transitions. [2022-11-16 11:16:34,981 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1030 transitions. Word has length 125 [2022-11-16 11:16:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:34,982 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1030 transitions. [2022-11-16 11:16:34,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:16:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1030 transitions. [2022-11-16 11:16:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 11:16:34,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:34,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:34,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19a8d83-b504-48bd-9963-ad7614e708af/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:16:35,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1248123790, now seen corresponding path program 1 times [2022-11-16 11:16:35,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:35,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592826555] [2022-11-16 11:16:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:16:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:16:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:16:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:16:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:16:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:16:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 11:16:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-16 11:16:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:35,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592826555] [2022-11-16 11:16:35,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592826555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:35,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:35,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089020550] [2022-11-16 11:16:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:35,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:35,323 INFO L87 Difference]: Start difference. First operand 624 states and 1030 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:36,534 INFO L93 Difference]: Finished difference Result 1542 states and 2607 transitions. [2022-11-16 11:16:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:36,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-11-16 11:16:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:36,541 INFO L225 Difference]: With dead ends: 1542 [2022-11-16 11:16:36,542 INFO L226 Difference]: Without dead ends: 986 [2022-11-16 11:16:36,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:36,546 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 683 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:36,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 689 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-11-16 11:16:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 924. [2022-11-16 11:16:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 720 states have (on average 1.6083333333333334) internal successors, (1158), 727 states have internal predecessors, (1158), 182 states have call successors, (182), 17 states have call predecessors, (182), 21 states have return successors, (213), 181 states have call predecessors, (213), 181 states have call successors, (213) [2022-11-16 11:16:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1553 transitions. [2022-11-16 11:16:36,649 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1553 transitions. Word has length 131 [2022-11-16 11:16:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:36,650 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1553 transitions. [2022-11-16 11:16:36,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1553 transitions. [2022-11-16 11:16:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:16:36,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:36,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:16:36,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -591151818, now seen corresponding path program 1 times [2022-11-16 11:16:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:36,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791597530] [2022-11-16 11:16:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:16:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:16:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:16:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:16:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:16:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:16:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:16:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:16:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:36,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791597530] [2022-11-16 11:16:36,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791597530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:36,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:36,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642160516] [2022-11-16 11:16:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:36,804 INFO L87 Difference]: Start difference. First operand 924 states and 1553 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:38,069 INFO L93 Difference]: Finished difference Result 2257 states and 3852 transitions. [2022-11-16 11:16:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-11-16 11:16:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:38,079 INFO L225 Difference]: With dead ends: 2257 [2022-11-16 11:16:38,080 INFO L226 Difference]: Without dead ends: 1454 [2022-11-16 11:16:38,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:38,084 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 681 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:38,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 662 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:38,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-16 11:16:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1392. [2022-11-16 11:16:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1093 states have (on average 1.614821591948765) internal successors, (1765), 1100 states have internal predecessors, (1765), 277 states have call successors, (277), 17 states have call predecessors, (277), 21 states have return successors, (308), 276 states have call predecessors, (308), 276 states have call successors, (308) [2022-11-16 11:16:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2350 transitions. [2022-11-16 11:16:38,300 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2350 transitions. Word has length 132 [2022-11-16 11:16:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:38,300 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 2350 transitions. [2022-11-16 11:16:38,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2350 transitions. [2022-11-16 11:16:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 11:16:38,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:38,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:16:38,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1575438508, now seen corresponding path program 1 times [2022-11-16 11:16:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:38,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171136478] [2022-11-16 11:16:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:16:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:16:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:16:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:16:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:16:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:16:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:16:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 11:16:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:38,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171136478] [2022-11-16 11:16:38,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171136478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:38,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:38,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:38,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711302946] [2022-11-16 11:16:38,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:38,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:38,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:38,440 INFO L87 Difference]: Start difference. First operand 1392 states and 2350 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:39,721 INFO L93 Difference]: Finished difference Result 3304 states and 5693 transitions. [2022-11-16 11:16:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-11-16 11:16:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:39,738 INFO L225 Difference]: With dead ends: 3304 [2022-11-16 11:16:39,738 INFO L226 Difference]: Without dead ends: 2158 [2022-11-16 11:16:39,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:39,746 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 679 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:39,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 662 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-11-16 11:16:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2096. [2022-11-16 11:16:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1674 states have (on average 1.6200716845878136) internal successors, (2712), 1681 states have internal predecessors, (2712), 400 states have call successors, (400), 17 states have call predecessors, (400), 21 states have return successors, (447), 399 states have call predecessors, (447), 399 states have call successors, (447) [2022-11-16 11:16:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3559 transitions. [2022-11-16 11:16:39,967 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3559 transitions. Word has length 133 [2022-11-16 11:16:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:39,967 INFO L495 AbstractCegarLoop]: Abstraction has 2096 states and 3559 transitions. [2022-11-16 11:16:39,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3559 transitions. [2022-11-16 11:16:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-16 11:16:39,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:39,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:16:39,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1009111593, now seen corresponding path program 1 times [2022-11-16 11:16:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:39,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354008314] [2022-11-16 11:16:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:16:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:16:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:16:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:16:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 11:16:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:16:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 11:16:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:16:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:40,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:40,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354008314] [2022-11-16 11:16:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354008314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:40,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:40,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935966807] [2022-11-16 11:16:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:40,220 INFO L87 Difference]: Start difference. First operand 2096 states and 3559 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:41,667 INFO L93 Difference]: Finished difference Result 4923 states and 8547 transitions. [2022-11-16 11:16:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-11-16 11:16:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:41,689 INFO L225 Difference]: With dead ends: 4923 [2022-11-16 11:16:41,689 INFO L226 Difference]: Without dead ends: 3277 [2022-11-16 11:16:41,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:41,697 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 677 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:41,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 662 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-16 11:16:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3215. [2022-11-16 11:16:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 2614 states have (on average 1.6231828615149198) internal successors, (4243), 2621 states have internal predecessors, (4243), 579 states have call successors, (579), 17 states have call predecessors, (579), 21 states have return successors, (652), 578 states have call predecessors, (652), 578 states have call successors, (652) [2022-11-16 11:16:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5474 transitions. [2022-11-16 11:16:42,103 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5474 transitions. Word has length 134 [2022-11-16 11:16:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:42,104 INFO L495 AbstractCegarLoop]: Abstraction has 3215 states and 5474 transitions. [2022-11-16 11:16:42,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5474 transitions. [2022-11-16 11:16:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 11:16:42,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:42,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:16:42,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1845738800, now seen corresponding path program 1 times [2022-11-16 11:16:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:42,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854569603] [2022-11-16 11:16:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:16:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:16:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:16:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 11:16:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:16:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 11:16:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 11:16:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:16:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854569603] [2022-11-16 11:16:42,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854569603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:42,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:42,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:42,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064009815] [2022-11-16 11:16:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:42,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:42,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:42,257 INFO L87 Difference]: Start difference. First operand 3215 states and 5474 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:43,775 INFO L93 Difference]: Finished difference Result 7841 states and 13646 transitions. [2022-11-16 11:16:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-11-16 11:16:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:43,808 INFO L225 Difference]: With dead ends: 7841 [2022-11-16 11:16:43,809 INFO L226 Difference]: Without dead ends: 5308 [2022-11-16 11:16:43,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:43,819 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 675 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:43,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 687 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-11-16 11:16:44,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5246. [2022-11-16 11:16:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 4269 states have (on average 1.6151323494963692) internal successors, (6895), 4276 states have internal predecessors, (6895), 955 states have call successors, (955), 17 states have call predecessors, (955), 21 states have return successors, (1072), 954 states have call predecessors, (1072), 954 states have call successors, (1072) [2022-11-16 11:16:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 8922 transitions. [2022-11-16 11:16:44,477 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 8922 transitions. Word has length 135 [2022-11-16 11:16:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:44,478 INFO L495 AbstractCegarLoop]: Abstraction has 5246 states and 8922 transitions. [2022-11-16 11:16:44,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 8922 transitions. [2022-11-16 11:16:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 11:16:44,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:44,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:44,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:16:44,510 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1080672677, now seen corresponding path program 1 times [2022-11-16 11:16:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:44,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960221780] [2022-11-16 11:16:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:44,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:16:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:16:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 11:16:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:16:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:16:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:16:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:16:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 11:16:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960221780] [2022-11-16 11:16:44,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960221780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:44,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:44,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665535544] [2022-11-16 11:16:44,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:44,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:44,701 INFO L87 Difference]: Start difference. First operand 5246 states and 8922 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:46,569 INFO L93 Difference]: Finished difference Result 12983 states and 22555 transitions. [2022-11-16 11:16:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-11-16 11:16:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:46,618 INFO L225 Difference]: With dead ends: 12983 [2022-11-16 11:16:46,619 INFO L226 Difference]: Without dead ends: 8796 [2022-11-16 11:16:46,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:46,633 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 673 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:46,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 663 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2022-11-16 11:16:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8734. [2022-11-16 11:16:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8734 states, 7151 states have (on average 1.612222066843798) internal successors, (11529), 7158 states have internal predecessors, (11529), 1561 states have call successors, (1561), 17 states have call predecessors, (1561), 21 states have return successors, (1756), 1560 states have call predecessors, (1756), 1560 states have call successors, (1756) [2022-11-16 11:16:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8734 states to 8734 states and 14846 transitions. [2022-11-16 11:16:47,828 INFO L78 Accepts]: Start accepts. Automaton has 8734 states and 14846 transitions. Word has length 136 [2022-11-16 11:16:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:47,829 INFO L495 AbstractCegarLoop]: Abstraction has 8734 states and 14846 transitions. [2022-11-16 11:16:47,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8734 states and 14846 transitions. [2022-11-16 11:16:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-16 11:16:47,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:47,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:47,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:16:47,866 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 53915538, now seen corresponding path program 1 times [2022-11-16 11:16:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070539512] [2022-11-16 11:16:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 11:16:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:16:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:16:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:16:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:16:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 11:16:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-16 11:16:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 11:16:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070539512] [2022-11-16 11:16:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070539512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:48,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:48,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973499892] [2022-11-16 11:16:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:48,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:48,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:48,022 INFO L87 Difference]: Start difference. First operand 8734 states and 14846 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:50,210 INFO L93 Difference]: Finished difference Result 22642 states and 39261 transitions. [2022-11-16 11:16:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:50,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-11-16 11:16:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:50,288 INFO L225 Difference]: With dead ends: 22642 [2022-11-16 11:16:50,288 INFO L226 Difference]: Without dead ends: 15389 [2022-11-16 11:16:50,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:50,317 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 671 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:50,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 719 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:16:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15389 states. [2022-11-16 11:16:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15389 to 15327. [2022-11-16 11:16:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15327 states, 12541 states have (on average 1.6023443106610318) internal successors, (20095), 12548 states have internal predecessors, (20095), 2764 states have call successors, (2764), 17 states have call predecessors, (2764), 21 states have return successors, (3103), 2763 states have call predecessors, (3103), 2763 states have call successors, (3103) [2022-11-16 11:16:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15327 states to 15327 states and 25962 transitions. [2022-11-16 11:16:51,995 INFO L78 Accepts]: Start accepts. Automaton has 15327 states and 25962 transitions. Word has length 137 [2022-11-16 11:16:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:51,996 INFO L495 AbstractCegarLoop]: Abstraction has 15327 states and 25962 transitions. [2022-11-16 11:16:51,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 15327 states and 25962 transitions. [2022-11-16 11:16:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 11:16:52,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:52,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:16:52,051 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1481692516, now seen corresponding path program 1 times [2022-11-16 11:16:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:52,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702164883] [2022-11-16 11:16:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:16:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:16:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:16:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:16:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:16:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:16:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:16:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:16:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:52,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702164883] [2022-11-16 11:16:52,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702164883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:52,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:52,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081582897] [2022-11-16 11:16:52,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:52,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:52,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:52,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:52,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:52,222 INFO L87 Difference]: Start difference. First operand 15327 states and 25962 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:55,458 INFO L93 Difference]: Finished difference Result 40598 states and 70244 transitions. [2022-11-16 11:16:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:16:55,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-11-16 11:16:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:55,605 INFO L225 Difference]: With dead ends: 40598 [2022-11-16 11:16:55,605 INFO L226 Difference]: Without dead ends: 27359 [2022-11-16 11:16:55,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:16:55,650 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 669 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:55,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 665 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:16:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2022-11-16 11:16:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 27297. [2022-11-16 11:16:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27297 states, 22472 states have (on average 1.597677109291563) internal successors, (35903), 22479 states have internal predecessors, (35903), 4803 states have call successors, (4803), 17 states have call predecessors, (4803), 21 states have return successors, (5416), 4802 states have call predecessors, (5416), 4802 states have call successors, (5416) [2022-11-16 11:16:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27297 states to 27297 states and 46122 transitions. [2022-11-16 11:16:58,780 INFO L78 Accepts]: Start accepts. Automaton has 27297 states and 46122 transitions. Word has length 138 [2022-11-16 11:16:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:58,781 INFO L495 AbstractCegarLoop]: Abstraction has 27297 states and 46122 transitions. [2022-11-16 11:16:58,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:16:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 27297 states and 46122 transitions. [2022-11-16 11:16:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-16 11:16:58,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:58,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:16:58,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash 808221876, now seen corresponding path program 1 times [2022-11-16 11:16:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:58,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375317002] [2022-11-16 11:16:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:16:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:16:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:16:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:16:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:16:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:16:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:16:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:16:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:16:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:16:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 11:16:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 11:16:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 11:16:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:16:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:16:58,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:58,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375317002] [2022-11-16 11:16:58,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375317002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:58,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:58,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:16:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589606422] [2022-11-16 11:16:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:58,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:16:58,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:58,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:16:58,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:16:58,971 INFO L87 Difference]: Start difference. First operand 27297 states and 46122 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:17:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:03,846 INFO L93 Difference]: Finished difference Result 74385 states and 127843 transitions. [2022-11-16 11:17:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:03,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-11-16 11:17:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:04,114 INFO L225 Difference]: With dead ends: 74385 [2022-11-16 11:17:04,114 INFO L226 Difference]: Without dead ends: 49908 [2022-11-16 11:17:04,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:17:04,209 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 667 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:04,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 689 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:17:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49908 states. [2022-11-16 11:17:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49908 to 49846. [2022-11-16 11:17:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49846 states, 41306 states have (on average 1.591633176778192) internal successors, (65744), 41313 states have internal predecessors, (65744), 8518 states have call successors, (8518), 17 states have call predecessors, (8518), 21 states have return successors, (9663), 8517 states have call predecessors, (9663), 8517 states have call successors, (9663) [2022-11-16 11:17:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49846 states to 49846 states and 83925 transitions. [2022-11-16 11:17:08,843 INFO L78 Accepts]: Start accepts. Automaton has 49846 states and 83925 transitions. Word has length 139 [2022-11-16 11:17:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:08,844 INFO L495 AbstractCegarLoop]: Abstraction has 49846 states and 83925 transitions. [2022-11-16 11:17:08,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:17:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 49846 states and 83925 transitions. [2022-11-16 11:17:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-16 11:17:08,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:08,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:08,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:17:08,909 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1362912252, now seen corresponding path program 1 times [2022-11-16 11:17:08,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:08,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691333673] [2022-11-16 11:17:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:08,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:17:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:17:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:17:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:17:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:17:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:17:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:17:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:17:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:17:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:17:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:17:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 11:17:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:17:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:17:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:17:09,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:09,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691333673] [2022-11-16 11:17:09,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691333673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:09,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:09,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:17:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924508932] [2022-11-16 11:17:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:09,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:17:09,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:17:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:17:09,049 INFO L87 Difference]: Start difference. First operand 49846 states and 83925 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:17:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:16,484 INFO L93 Difference]: Finished difference Result 92871 states and 159974 transitions. [2022-11-16 11:17:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-11-16 11:17:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:16,860 INFO L225 Difference]: With dead ends: 92871 [2022-11-16 11:17:16,860 INFO L226 Difference]: Without dead ends: 92752 [2022-11-16 11:17:16,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:17:16,895 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 665 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 665 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:17:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92752 states.