./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ --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 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a --- 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-dbf71c6-m [2022-10-17 10:20:08,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:08,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:09,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:09,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:09,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:09,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:09,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:09,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:09,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:09,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:09,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:09,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:09,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:09,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:09,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:09,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:09,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:09,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:09,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:09,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:09,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:09,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:09,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:09,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:09,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:09,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:09,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:09,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:09,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:09,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:09,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:09,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:09,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:09,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:09,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:09,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:09,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:09,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:09,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:09,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:09,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:20:09,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:09,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:09,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:09,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:09,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:20:09,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:20:09,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:09,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:09,168 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:09,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:09,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:09,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:09,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:09,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:09,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:20:09,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:20:09,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:20:09,171 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:09,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:09,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:09,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:20:09,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:09,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:09,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:20:09,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:09,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:09,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:20:09,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:20:09,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:09,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:20:09,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:20:09,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:20:09,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:20:09,178 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_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15275a4436f6ed835fc824ec788a3589ee34ef53cd98082c25cb994e481acd9a [2022-10-17 10:20:09,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:09,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:09,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:09,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:09,507 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:09,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-10-17 10:20:09,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/data/ede1630f7/d779ca6897f34000acca6b6f70d67306/FLAGf85222448 [2022-10-17 10:20:10,134 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:10,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c [2022-10-17 10:20:10,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/data/ede1630f7/d779ca6897f34000acca6b6f70d67306/FLAGf85222448 [2022-10-17 10:20:10,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/data/ede1630f7/d779ca6897f34000acca6b6f70d67306 [2022-10-17 10:20:10,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:10,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:10,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:10,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:10,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:10,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:10" (1/1) ... [2022-10-17 10:20:10,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1fd95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:10, skipping insertion in model container [2022-10-17 10:20:10,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:10" (1/1) ... [2022-10-17 10:20:10,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:10,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:10,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-10-17 10:20:11,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:11,112 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:20:11,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/sv-benchmarks/c/product-lines/email_spec8_product30.cil.c[7858,7871] [2022-10-17 10:20:11,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:11,253 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:20:11,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11 WrapperNode [2022-10-17 10:20:11,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:11,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:11,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:20:11,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:20:11,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,377 INFO L138 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 923 [2022-10-17 10:20:11,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:11,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:20:11,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:20:11,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:20:11,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:20:11,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:20:11,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:20:11,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:20:11,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (1/1) ... [2022-10-17 10:20:11,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:11,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:11,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:20:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 10:20:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 10:20:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 10:20:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 10:20:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 10:20:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 10:20:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 10:20:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 10:20:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 10:20:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 10:20:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 10:20:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 10:20:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 10:20:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 10:20:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 10:20:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 10:20:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 10:20:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 10:20:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 10:20:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 10:20:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 10:20:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 10:20:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 10:20:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 10:20:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 10:20:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 10:20:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 10:20:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 10:20:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 10:20:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 10:20:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 10:20:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 10:20:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 10:20:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 10:20:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 10:20:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 10:20:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 10:20:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 10:20:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 10:20:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 10:20:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 10:20:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:20:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 10:20:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 10:20:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:20:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:20:11,937 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:20:11,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:20:12,962 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:20:12,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:20:12,981 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:20:12,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:12 BoogieIcfgContainer [2022-10-17 10:20:12,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:20:12,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:20:12,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:20:12,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:20:12,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:10" (1/3) ... [2022-10-17 10:20:12,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f8d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:12, skipping insertion in model container [2022-10-17 10:20:12,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:11" (2/3) ... [2022-10-17 10:20:12,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f8d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:12, skipping insertion in model container [2022-10-17 10:20:12,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:12" (3/3) ... [2022-10-17 10:20:12,997 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product30.cil.c [2022-10-17 10:20:13,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:20:13,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:20:13,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:20:13,129 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;@8cf9bb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:20:13,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:20:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 274 states have internal predecessors, (409), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-17 10:20:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-17 10:20:13,158 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:13,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:13,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054471, now seen corresponding path program 1 times [2022-10-17 10:20:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:13,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637837367] [2022-10-17 10:20:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:20:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:20:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:20:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 10:20:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:20:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:20:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:20:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:20:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:20:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:20:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:20:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637837367] [2022-10-17 10:20:14,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637837367] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:14,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184120754] [2022-10-17 10:20:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:14,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:14,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:14,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:20:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:14,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:20:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:20:14,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:20:14,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184120754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:14,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:20:14,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-10-17 10:20:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764735327] [2022-10-17 10:20:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:20:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:14,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:20:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:20:14,476 INFO L87 Difference]: Start difference. First operand has 348 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 274 states have internal predecessors, (409), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:14,569 INFO L93 Difference]: Finished difference Result 542 states and 784 transitions. [2022-10-17 10:20:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:20:14,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-10-17 10:20:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:14,589 INFO L225 Difference]: With dead ends: 542 [2022-10-17 10:20:14,589 INFO L226 Difference]: Without dead ends: 341 [2022-10-17 10:20:14,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:20:14,600 INFO L413 NwaCegarLoop]: 511 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, 511 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 [2022-10-17 10:20:14,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:20:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-10-17 10:20:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-10-17 10:20:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 264 states have (on average 1.5075757575757576) internal successors, (398), 267 states have internal predecessors, (398), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 10:20:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 503 transitions. [2022-10-17 10:20:14,682 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 503 transitions. Word has length 101 [2022-10-17 10:20:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:14,683 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 503 transitions. [2022-10-17 10:20:14,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 503 transitions. [2022-10-17 10:20:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:20:14,692 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:14,692 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:14,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:20:14,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash -574775984, now seen corresponding path program 1 times [2022-10-17 10:20:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:14,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610839967] [2022-10-17 10:20:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:20:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:20:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:20:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:20:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:20:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:20:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:20:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:20:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:20:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:20:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:20:15,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:15,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610839967] [2022-10-17 10:20:15,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610839967] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808103268] [2022-10-17 10:20:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:15,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:15,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:15,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:20:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:20:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:20:15,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:20:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808103268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:15,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:20:15,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:20:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381453642] [2022-10-17 10:20:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:20:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:20:15,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:20:15,804 INFO L87 Difference]: Start difference. First operand 341 states and 503 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:15,878 INFO L93 Difference]: Finished difference Result 532 states and 765 transitions. [2022-10-17 10:20:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:20:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-10-17 10:20:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:15,889 INFO L225 Difference]: With dead ends: 532 [2022-10-17 10:20:15,889 INFO L226 Difference]: Without dead ends: 344 [2022-10-17 10:20:15,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:20:15,893 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1000 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 [2022-10-17 10:20:15,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1000 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:20:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-10-17 10:20:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2022-10-17 10:20:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 266 states have (on average 1.5037593984962405) internal successors, (400), 269 states have internal predecessors, (400), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 10:20:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 505 transitions. [2022-10-17 10:20:15,944 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 505 transitions. Word has length 102 [2022-10-17 10:20:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:15,947 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 505 transitions. [2022-10-17 10:20:15,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 505 transitions. [2022-10-17 10:20:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 10:20:15,956 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:15,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:15,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:16,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1701758514, now seen corresponding path program 1 times [2022-10-17 10:20:16,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:16,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717370514] [2022-10-17 10:20:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:20:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:20:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:20:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:20:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:20:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:20:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:20:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:20:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:20:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:20:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:20:16,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:16,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717370514] [2022-10-17 10:20:16,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717370514] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:16,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014549438] [2022-10-17 10:20:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:16,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:16,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:16,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:20:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:20:16,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:20:16,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:20:16,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014549438] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:16,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:20:16,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:20:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290505622] [2022-10-17 10:20:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:16,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:20:16,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:16,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:20:16,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:20:16,792 INFO L87 Difference]: Start difference. First operand 343 states and 505 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:16,852 INFO L93 Difference]: Finished difference Result 716 states and 1069 transitions. [2022-10-17 10:20:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:20:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-10-17 10:20:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:16,859 INFO L225 Difference]: With dead ends: 716 [2022-10-17 10:20:16,859 INFO L226 Difference]: Without dead ends: 400 [2022-10-17 10:20:16,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:20:16,865 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 107 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 985 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 [2022-10-17 10:20:16,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 985 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:20:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-10-17 10:20:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 392. [2022-10-17 10:20:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 304 states have (on average 1.519736842105263) internal successors, (462), 307 states have internal predecessors, (462), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-10-17 10:20:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 589 transitions. [2022-10-17 10:20:16,932 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 589 transitions. Word has length 111 [2022-10-17 10:20:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:16,933 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 589 transitions. [2022-10-17 10:20:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 589 transitions. [2022-10-17 10:20:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-17 10:20:16,939 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:16,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:16,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:17,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:17,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:17,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1695941731, now seen corresponding path program 1 times [2022-10-17 10:20:17,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:17,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51745987] [2022-10-17 10:20:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:17,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:20:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:20:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:20:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:20:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:20:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:20:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:20:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:20:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:20:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:20:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:20:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:17,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51745987] [2022-10-17 10:20:17,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51745987] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:17,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634907591] [2022-10-17 10:20:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:17,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:17,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:17,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:17,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:20:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:20:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:20:17,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:20:17,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634907591] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:17,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:20:17,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 10:20:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096009268] [2022-10-17 10:20:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:20:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:20:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:20:17,835 INFO L87 Difference]: Start difference. First operand 392 states and 589 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:17,916 INFO L93 Difference]: Finished difference Result 775 states and 1168 transitions. [2022-10-17 10:20:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:20:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-10-17 10:20:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:17,921 INFO L225 Difference]: With dead ends: 775 [2022-10-17 10:20:17,921 INFO L226 Difference]: Without dead ends: 394 [2022-10-17 10:20:17,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:20:17,924 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 125 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1831 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 [2022-10-17 10:20:17,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1831 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:20:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-10-17 10:20:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-10-17 10:20:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 305 states have (on average 1.518032786885246) internal successors, (463), 309 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 24 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2022-10-17 10:20:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 592 transitions. [2022-10-17 10:20:17,953 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 592 transitions. Word has length 112 [2022-10-17 10:20:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:17,954 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 592 transitions. [2022-10-17 10:20:17,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 592 transitions. [2022-10-17 10:20:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-17 10:20:17,957 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:17,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:18,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:18,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1112941486, now seen corresponding path program 1 times [2022-10-17 10:20:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:18,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213909278] [2022-10-17 10:20:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:20:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:20:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:20:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:20:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:20:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:20:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:20:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:20:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:20:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:20:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213909278] [2022-10-17 10:20:18,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213909278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:18,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238480872] [2022-10-17 10:20:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:18,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:18,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:18,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:18,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:20:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:20:18,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:20:18,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:20:18,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238480872] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:18,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:20:18,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-10-17 10:20:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019663431] [2022-10-17 10:20:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:18,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:20:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:20:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:20:18,847 INFO L87 Difference]: Start difference. First operand 394 states and 592 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:18,941 INFO L93 Difference]: Finished difference Result 777 states and 1173 transitions. [2022-10-17 10:20:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:20:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-10-17 10:20:18,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:18,946 INFO L225 Difference]: With dead ends: 777 [2022-10-17 10:20:18,947 INFO L226 Difference]: Without dead ends: 396 [2022-10-17 10:20:18,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:20:18,950 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 124 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1820 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 [2022-10-17 10:20:18,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1820 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:20:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-10-17 10:20:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-10-17 10:20:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 311 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-10-17 10:20:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 598 transitions. [2022-10-17 10:20:18,992 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 598 transitions. Word has length 113 [2022-10-17 10:20:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:18,994 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 598 transitions. [2022-10-17 10:20:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 598 transitions. [2022-10-17 10:20:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:20:18,997 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:18,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:19,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:19,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1060391108, now seen corresponding path program 1 times [2022-10-17 10:20:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:19,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215287518] [2022-10-17 10:20:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:20:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:20:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:20:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:20:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:20:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:20:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:20:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:20:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:20:19,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215287518] [2022-10-17 10:20:19,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215287518] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:19,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:19,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:20:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258359465] [2022-10-17 10:20:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:19,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:20:19,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:20:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:20:19,484 INFO L87 Difference]: Start difference. First operand 396 states and 598 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:21,722 INFO L93 Difference]: Finished difference Result 885 states and 1338 transitions. [2022-10-17 10:20:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:20:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-10-17 10:20:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:21,729 INFO L225 Difference]: With dead ends: 885 [2022-10-17 10:20:21,729 INFO L226 Difference]: Without dead ends: 512 [2022-10-17 10:20:21,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:20:21,733 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1264 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:21,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1363 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 10:20:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-10-17 10:20:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 396. [2022-10-17 10:20:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 311 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2022-10-17 10:20:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 597 transitions. [2022-10-17 10:20:21,804 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 597 transitions. Word has length 114 [2022-10-17 10:20:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:21,805 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 597 transitions. [2022-10-17 10:20:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 597 transitions. [2022-10-17 10:20:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-17 10:20:21,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:21,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:21,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:20:21,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1537453393, now seen corresponding path program 2 times [2022-10-17 10:20:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:21,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102677204] [2022-10-17 10:20:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:20:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:20:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:20:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:20:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:20:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:20:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:20:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:20:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:20:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102677204] [2022-10-17 10:20:22,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102677204] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:22,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:22,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:20:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76509475] [2022-10-17 10:20:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:22,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:20:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:20:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:20:22,103 INFO L87 Difference]: Start difference. First operand 396 states and 597 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:24,182 INFO L93 Difference]: Finished difference Result 887 states and 1341 transitions. [2022-10-17 10:20:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:20:24,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-10-17 10:20:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:24,189 INFO L225 Difference]: With dead ends: 887 [2022-10-17 10:20:24,189 INFO L226 Difference]: Without dead ends: 514 [2022-10-17 10:20:24,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:20:24,193 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1328 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:24,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1342 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:20:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-17 10:20:24,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 398. [2022-10-17 10:20:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 313 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2022-10-17 10:20:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 600 transitions. [2022-10-17 10:20:24,247 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 600 transitions. Word has length 115 [2022-10-17 10:20:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:24,248 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 600 transitions. [2022-10-17 10:20:24,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-17 10:20:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 600 transitions. [2022-10-17 10:20:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 10:20:24,251 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:24,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:24,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:20:24,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2002771209, now seen corresponding path program 1 times [2022-10-17 10:20:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:24,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639751764] [2022-10-17 10:20:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:20:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:20:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:20:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:20:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:20:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:20:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:20:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:20:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:20:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:24,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639751764] [2022-10-17 10:20:24,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639751764] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:24,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:24,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:20:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743958320] [2022-10-17 10:20:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:24,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:20:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:20:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:20:24,544 INFO L87 Difference]: Start difference. First operand 398 states and 600 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 10:20:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:27,064 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2022-10-17 10:20:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:20:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-10-17 10:20:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:27,070 INFO L225 Difference]: With dead ends: 885 [2022-10-17 10:20:27,070 INFO L226 Difference]: Without dead ends: 514 [2022-10-17 10:20:27,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:20:27,074 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1458 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1630 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:20:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-17 10:20:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 398. [2022-10-17 10:20:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 313 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2022-10-17 10:20:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 599 transitions. [2022-10-17 10:20:27,122 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 599 transitions. Word has length 116 [2022-10-17 10:20:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:27,123 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 599 transitions. [2022-10-17 10:20:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 10:20:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 599 transitions. [2022-10-17 10:20:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 10:20:27,126 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:27,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:20:27,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1002334185, now seen corresponding path program 2 times [2022-10-17 10:20:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:27,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472675667] [2022-10-17 10:20:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:20:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:20:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:20:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:20:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:20:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:20:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:20:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:20:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:20:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:27,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472675667] [2022-10-17 10:20:27,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472675667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:27,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:27,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:20:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746772083] [2022-10-17 10:20:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:20:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:20:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:20:27,455 INFO L87 Difference]: Start difference. First operand 398 states and 599 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 10:20:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:30,194 INFO L93 Difference]: Finished difference Result 887 states and 1342 transitions. [2022-10-17 10:20:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:20:30,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-10-17 10:20:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:30,201 INFO L225 Difference]: With dead ends: 887 [2022-10-17 10:20:30,201 INFO L226 Difference]: Without dead ends: 516 [2022-10-17 10:20:30,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:20:30,206 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1384 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:30,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1655 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:20:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-10-17 10:20:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 400. [2022-10-17 10:20:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 315 states have internal predecessors, (466), 64 states have call successors, (64), 23 states have call predecessors, (64), 27 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2022-10-17 10:20:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 605 transitions. [2022-10-17 10:20:30,257 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 605 transitions. Word has length 117 [2022-10-17 10:20:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:30,259 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 605 transitions. [2022-10-17 10:20:30,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 10:20:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 605 transitions. [2022-10-17 10:20:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:20:30,263 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:30,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:20:30,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2130467694, now seen corresponding path program 1 times [2022-10-17 10:20:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:30,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874174954] [2022-10-17 10:20:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:20:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:20:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:20:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:20:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:20:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:20:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:20:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:20:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-17 10:20:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874174954] [2022-10-17 10:20:30,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874174954] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117339182] [2022-10-17 10:20:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:30,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:30,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:30,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:20:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:20:30,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:20:30,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:20:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:20:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117339182] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:20:31,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:20:31,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-10-17 10:20:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185426492] [2022-10-17 10:20:31,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:20:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:20:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:20:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:20:31,059 INFO L87 Difference]: Start difference. First operand 400 states and 605 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-10-17 10:20:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:35,371 INFO L93 Difference]: Finished difference Result 1566 states and 2570 transitions. [2022-10-17 10:20:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:20:35,372 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2022-10-17 10:20:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:35,384 INFO L225 Difference]: With dead ends: 1566 [2022-10-17 10:20:35,385 INFO L226 Difference]: Without dead ends: 1197 [2022-10-17 10:20:35,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:20:35,390 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2854 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 6372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2856 Valid, 3626 Invalid, 6372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1119 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-10-17 10:20:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-10-17 10:20:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 728. [2022-10-17 10:20:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 572 states have (on average 1.5681818181818181) internal successors, (897), 579 states have internal predecessors, (897), 128 states have call successors, (128), 23 states have call predecessors, (128), 27 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2022-10-17 10:20:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1174 transitions. [2022-10-17 10:20:35,499 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1174 transitions. Word has length 118 [2022-10-17 10:20:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:35,499 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1174 transitions. [2022-10-17 10:20:35,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-10-17 10:20:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1174 transitions. [2022-10-17 10:20:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:20:35,505 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:35,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:35,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:35,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f021a-4b94-4f23-a61b-5493280d34c4/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:35,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2048334358, now seen corresponding path program 1 times [2022-10-17 10:20:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:35,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83311214] [2022-10-17 10:20:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:35,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:20:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:20:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:20:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:20:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:20:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:20:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:20:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:20:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:20:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:35,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83311214] [2022-10-17 10:20:35,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83311214] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:35,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:35,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:20:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927752083] [2022-10-17 10:20:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:20:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:20:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:20:35,881 INFO L87 Difference]: Start difference. First operand 728 states and 1174 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:37,543 INFO L93 Difference]: Finished difference Result 1802 states and 2973 transitions. [2022-10-17 10:20:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-10-17 10:20:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:20:37,565 INFO L225 Difference]: With dead ends: 1802 [2022-10-17 10:20:37,565 INFO L226 Difference]: Without dead ends: 1152 [2022-10-17 10:20:37,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:20:37,570 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1291 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:20:37,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1220 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:20:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-10-17 10:20:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1028. [2022-10-17 10:20:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 808 states have (on average 1.5866336633663367) internal successors, (1282), 815 states have internal predecessors, (1282), 192 states have call successors, (192), 23 states have call predecessors, (192), 27 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2022-10-17 10:20:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1697 transitions. [2022-10-17 10:20:37,743 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1697 transitions. Word has length 121 [2022-10-17 10:20:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:20:37,744 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1697 transitions. [2022-10-17 10:20:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:20:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1697 transitions. [2022-10-17 10:20:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 10:20:37,751 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:20:37,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:37,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:20:37,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:20:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:37,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1488494286, now seen corresponding path program 1 times [2022-10-17 10:20:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:37,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872117270] [2022-10-17 10:20:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:20:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:20:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:20:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:20:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:20:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:20:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:20:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:20:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:20:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:20:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:20:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:20:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:20:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872117270] [2022-10-17 10:20:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872117270] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:37,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:37,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:20:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951619403] [2022-10-17 10:20:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:20:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:20:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:20:37,881 INFO L87 Difference]: Start difference. First operand 1028 states and 1697 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)