./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/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 80e9bbe10488e38c848fee2c8f87fc84d027f309ec95e867f80c828929ca07a3 --- 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 10:25:15,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:25:15,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:25:15,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:25:15,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:25:15,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:25:15,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:25:15,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:25:15,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:25:15,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:25:15,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:25:15,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:25:15,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:25:15,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:25:15,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:25:15,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:25:15,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:25:15,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:25:15,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:25:15,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:25:15,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:25:15,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:25:15,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:25:15,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:25:15,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:25:15,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:25:15,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:25:15,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:25:15,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:25:15,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:25:15,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:25:15,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:25:15,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:25:15,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:25:15,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:25:15,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:25:15,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:25:15,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:25:15,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:25:15,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:25:15,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:25:15,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:25:15,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:25:15,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:25:15,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:25:15,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:25:15,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:25:15,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:25:15,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:25:15,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:25:15,167 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:25:15,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:25:15,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:25:15,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:25:15,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:25:15,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:25:15,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:25:15,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:25:15,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:25:15,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:25:15,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:25:15,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:25:15,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:25:15,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:25:15,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:25:15,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:25:15,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:15,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:25:15,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:25:15,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:25:15,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:25:15,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:25:15,173 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:25:15,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:25:15,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:25:15,174 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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80e9bbe10488e38c848fee2c8f87fc84d027f309ec95e867f80c828929ca07a3 [2022-10-17 10:25:15,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:25:15,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:25:15,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:25:15,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:25:15,490 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:25:15,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/email_spec4_product30.cil.c [2022-10-17 10:25:15,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/data/18ba72925/f5a6c333db25429da530490c3e298399/FLAG414f4bf68 [2022-10-17 10:25:16,302 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:25:16,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/sv-benchmarks/c/product-lines/email_spec4_product30.cil.c [2022-10-17 10:25:16,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/data/18ba72925/f5a6c333db25429da530490c3e298399/FLAG414f4bf68 [2022-10-17 10:25:16,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/data/18ba72925/f5a6c333db25429da530490c3e298399 [2022-10-17 10:25:16,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:25:16,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:25:16,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:16,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:25:16,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:25:16,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:16" (1/1) ... [2022-10-17 10:25:16,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc473d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:16, skipping insertion in model container [2022-10-17 10:25:16,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:16" (1/1) ... [2022-10-17 10:25:16,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:25:16,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:25:17,272 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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/sv-benchmarks/c/product-lines/email_spec4_product30.cil.c[64112,64125] [2022-10-17 10:25:17,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:17,293 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:25:17,427 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_60eac108-6642-4bb9-b1dd-0e72a1d8b102/sv-benchmarks/c/product-lines/email_spec4_product30.cil.c[64112,64125] [2022-10-17 10:25:17,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:17,471 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:25:17,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17 WrapperNode [2022-10-17 10:25:17,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:17,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:17,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:25:17,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:25:17,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,600 INFO L138 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 909 [2022-10-17 10:25:17,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:17,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:25:17,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:25:17,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:25:17,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:25:17,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:25:17,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:25:17,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:25:17,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (1/1) ... [2022-10-17 10:25:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:17,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:25:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:25:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 10:25:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 10:25:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 10:25:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 10:25:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 10:25:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 10:25:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 10:25:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 10:25:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 10:25:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 10:25:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 10:25:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 10:25:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 10:25:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 10:25:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 10:25:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 10:25:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 10:25:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 10:25:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 10:25:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 10:25:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 10:25:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 10:25:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 10:25:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 10:25:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 10:25:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:25:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 10:25:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 10:25:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 10:25:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 10:25:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 10:25:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 10:25:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 10:25:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 10:25:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 10:25:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 10:25:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 10:25:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 10:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 10:25:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 10:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 10:25:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 10:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 10:25:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 10:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 10:25:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 10:25:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:25:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 10:25:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 10:25:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:25:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:25:18,026 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:25:18,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:25:19,210 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:25:19,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:25:19,229 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:25:19,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:19 BoogieIcfgContainer [2022-10-17 10:25:19,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:25:19,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:25:19,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:25:19,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:25:19,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:25:16" (1/3) ... [2022-10-17 10:25:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160527f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:19, skipping insertion in model container [2022-10-17 10:25:19,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:17" (2/3) ... [2022-10-17 10:25:19,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160527f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:19, skipping insertion in model container [2022-10-17 10:25:19,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:19" (3/3) ... [2022-10-17 10:25:19,244 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product30.cil.c [2022-10-17 10:25:19,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:25:19,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:25:19,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:19,380 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;@7695d78f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:19,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:25:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 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 10:25:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-17 10:25:19,436 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:19,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:19,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1539584585, now seen corresponding path program 1 times [2022-10-17 10:25:19,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:19,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893559531] [2022-10-17 10:25:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:25:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:25:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:25:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 10:25:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:25:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:25:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:25:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:25:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:25:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:25:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:25:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:25:20,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:20,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893559531] [2022-10-17 10:25:20,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893559531] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:20,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679762559] [2022-10-17 10:25:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:20,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:20,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:20,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:20,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:25:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:20,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:25:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:25:20,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:25:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679762559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:20,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:25:20,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-10-17 10:25:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235235135] [2022-10-17 10:25:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:25:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:25:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:25:20,876 INFO L87 Difference]: Start difference. First operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:20,939 INFO L93 Difference]: Finished difference Result 540 states and 782 transitions. [2022-10-17 10:25:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:25:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2022-10-17 10:25:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:20,958 INFO L225 Difference]: With dead ends: 540 [2022-10-17 10:25:20,958 INFO L226 Difference]: Without dead ends: 340 [2022-10-17 10:25:20,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 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 10:25:20,969 INFO L413 NwaCegarLoop]: 510 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, 510 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 10:25:20,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:25:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-10-17 10:25:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-10-17 10:25:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 263 states have (on average 1.5095057034220531) internal successors, (397), 266 states have internal predecessors, (397), 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 10:25:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 502 transitions. [2022-10-17 10:25:21,048 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 502 transitions. Word has length 107 [2022-10-17 10:25:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:21,049 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 502 transitions. [2022-10-17 10:25:21,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 502 transitions. [2022-10-17 10:25:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-10-17 10:25:21,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:21,057 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:21,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:21,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:25:21,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:21,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1418715390, now seen corresponding path program 1 times [2022-10-17 10:25:21,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:21,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477555019] [2022-10-17 10:25:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:21,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:25:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:25:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:25:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:25:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:25:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:25:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:25:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:25:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:25:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:25:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:25:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:25:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:21,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477555019] [2022-10-17 10:25:21,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477555019] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:21,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602811588] [2022-10-17 10:25:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:21,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:21,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:21,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:25:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:25:22,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:25:22,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:25:22,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602811588] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:22,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:25:22,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:25:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633878001] [2022-10-17 10:25:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:22,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:25:22,130 INFO L87 Difference]: Start difference. First operand 340 states and 502 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:22,221 INFO L93 Difference]: Finished difference Result 530 states and 763 transitions. [2022-10-17 10:25:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-10-17 10:25:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:22,240 INFO L225 Difference]: With dead ends: 530 [2022-10-17 10:25:22,241 INFO L226 Difference]: Without dead ends: 343 [2022-10-17 10:25:22,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 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 10:25:22,244 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 998 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 10:25:22,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:25:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-10-17 10:25:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2022-10-17 10:25:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 265 states have (on average 1.5056603773584907) internal successors, (399), 268 states have internal predecessors, (399), 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 10:25:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 504 transitions. [2022-10-17 10:25:22,296 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 504 transitions. Word has length 108 [2022-10-17 10:25:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:22,297 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 504 transitions. [2022-10-17 10:25:22,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:22,297 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 504 transitions. [2022-10-17 10:25:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 10:25:22,303 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:22,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:22,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:22,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:22,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:22,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1020845470, now seen corresponding path program 1 times [2022-10-17 10:25:22,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:22,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784233077] [2022-10-17 10:25:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:22,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:25:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:25:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:25:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:25:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:25:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:25:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:25:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:25:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:25:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:25:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:25:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:25:22,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:22,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784233077] [2022-10-17 10:25:22,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784233077] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:22,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686577504] [2022-10-17 10:25:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:22,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:22,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:22,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:22,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:25:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:25:23,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:25:23,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:25:23,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686577504] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:23,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:25:23,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:25:23,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88700958] [2022-10-17 10:25:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:25:23,240 INFO L87 Difference]: Start difference. First operand 342 states and 504 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:23,327 INFO L93 Difference]: Finished difference Result 714 states and 1067 transitions. [2022-10-17 10:25:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:23,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2022-10-17 10:25:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:23,338 INFO L225 Difference]: With dead ends: 714 [2022-10-17 10:25:23,338 INFO L226 Difference]: Without dead ends: 399 [2022-10-17 10:25:23,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 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 10:25:23,344 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 107 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 977 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 10:25:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 977 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:25:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-10-17 10:25:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 391. [2022-10-17 10:25:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 303 states have (on average 1.5214521452145215) internal successors, (461), 306 states have internal predecessors, (461), 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 10:25:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 588 transitions. [2022-10-17 10:25:23,429 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 588 transitions. Word has length 117 [2022-10-17 10:25:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:23,432 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 588 transitions. [2022-10-17 10:25:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:25:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 588 transitions. [2022-10-17 10:25:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:25:23,445 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:23,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:23,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:23,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:23,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -458011057, now seen corresponding path program 1 times [2022-10-17 10:25:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:23,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453009679] [2022-10-17 10:25:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:25:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:25:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:25:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:25:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:25:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:25:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:25:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:25:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:25:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:25:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:25:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:25:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:23,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453009679] [2022-10-17 10:25:23,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453009679] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686590789] [2022-10-17 10:25:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:23,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:23,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:23,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:25:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:24,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:25:24,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:25:24,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:25:24,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686590789] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:24,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:25:24,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 10:25:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238730704] [2022-10-17 10:25:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:24,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:25:24,397 INFO L87 Difference]: Start difference. First operand 391 states and 588 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:24,495 INFO L93 Difference]: Finished difference Result 773 states and 1166 transitions. [2022-10-17 10:25:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-10-17 10:25:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:24,501 INFO L225 Difference]: With dead ends: 773 [2022-10-17 10:25:24,501 INFO L226 Difference]: Without dead ends: 393 [2022-10-17 10:25:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 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 10:25:24,508 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 125 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1827 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 10:25:24,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1827 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:25:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-10-17 10:25:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-10-17 10:25:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 304 states have (on average 1.519736842105263) internal successors, (462), 308 states have internal predecessors, (462), 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 10:25:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 591 transitions. [2022-10-17 10:25:24,548 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 591 transitions. Word has length 118 [2022-10-17 10:25:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:24,549 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 591 transitions. [2022-10-17 10:25:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 591 transitions. [2022-10-17 10:25:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 10:25:24,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:24,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:24,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:24,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 337103646, now seen corresponding path program 1 times [2022-10-17 10:25:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670999524] [2022-10-17 10:25:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:25:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:25:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:25:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:25:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:25:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:25:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:25:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:25:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:25:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:25:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:25:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:25,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670999524] [2022-10-17 10:25:25,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670999524] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:25,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731011909] [2022-10-17 10:25:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:25,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:25,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:25,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:25:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:25,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:25:25,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:25:25,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:25:25,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731011909] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:25,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:25:25,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-10-17 10:25:25,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144080587] [2022-10-17 10:25:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:25,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:25:25,519 INFO L87 Difference]: Start difference. First operand 393 states and 591 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:25,611 INFO L93 Difference]: Finished difference Result 775 states and 1171 transitions. [2022-10-17 10:25:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:25,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-10-17 10:25:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:25,617 INFO L225 Difference]: With dead ends: 775 [2022-10-17 10:25:25,617 INFO L226 Difference]: Without dead ends: 395 [2022-10-17 10:25:25,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 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 10:25:25,621 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 124 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1816 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 10:25:25,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1816 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:25:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-10-17 10:25:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-10-17 10:25:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 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 10:25:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 597 transitions. [2022-10-17 10:25:25,663 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 597 transitions. Word has length 119 [2022-10-17 10:25:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:25,663 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 597 transitions. [2022-10-17 10:25:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 597 transitions. [2022-10-17 10:25:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-17 10:25:25,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:25,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:25,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:25,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash -207075730, now seen corresponding path program 1 times [2022-10-17 10:25:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:25,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307706595] [2022-10-17 10:25:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:25:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:25:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:25:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:25:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:25:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:25:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:25:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:25:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:25:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:25:26,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:26,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307706595] [2022-10-17 10:25:26,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307706595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:26,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:26,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:25:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379147703] [2022-10-17 10:25:26,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:25:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:25:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:25:26,182 INFO L87 Difference]: Start difference. First operand 395 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:28,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:28,315 INFO L93 Difference]: Finished difference Result 882 states and 1335 transitions. [2022-10-17 10:25:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:25:28,316 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-10-17 10:25:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:28,321 INFO L225 Difference]: With dead ends: 882 [2022-10-17 10:25:28,321 INFO L226 Difference]: Without dead ends: 510 [2022-10-17 10:25:28,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 10:25:28,324 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1213 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:25:28,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1379 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:25:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-10-17 10:25:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2022-10-17 10:25:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 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 10:25:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 596 transitions. [2022-10-17 10:25:28,383 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 596 transitions. Word has length 120 [2022-10-17 10:25:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:28,383 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 596 transitions. [2022-10-17 10:25:28,383 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 596 transitions. [2022-10-17 10:25:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:25:28,387 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:28,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:28,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:25:28,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -143770209, now seen corresponding path program 2 times [2022-10-17 10:25:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:28,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998214163] [2022-10-17 10:25:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:25:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:25:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:25:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:25:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:25:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:25:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:25:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:25:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:25:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:25:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:28,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998214163] [2022-10-17 10:25:28,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998214163] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:28,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:28,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:25:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542979114] [2022-10-17 10:25:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:25:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:25:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:25:28,670 INFO L87 Difference]: Start difference. First operand 395 states and 596 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:30,719 INFO L93 Difference]: Finished difference Result 884 states and 1338 transitions. [2022-10-17 10:25:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:25:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-10-17 10:25:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:30,725 INFO L225 Difference]: With dead ends: 884 [2022-10-17 10:25:30,725 INFO L226 Difference]: Without dead ends: 512 [2022-10-17 10:25:30,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 10:25:30,728 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1208 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:25:30,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1380 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:25:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-10-17 10:25:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2022-10-17 10:25:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 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 10:25:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 599 transitions. [2022-10-17 10:25:30,779 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 599 transitions. Word has length 121 [2022-10-17 10:25:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:30,779 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 599 transitions. [2022-10-17 10:25:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 10:25:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 599 transitions. [2022-10-17 10:25:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 10:25:30,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:30,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:30,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:25:30,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -930252375, now seen corresponding path program 1 times [2022-10-17 10:25:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148316805] [2022-10-17 10:25:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:25:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:25:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:25:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-17 10:25:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:25:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:25:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:25:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:25:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:25:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:25:31,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:31,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148316805] [2022-10-17 10:25:31,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148316805] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:31,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:31,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:25:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433957465] [2022-10-17 10:25:31,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:25:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:25:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:25:31,152 INFO L87 Difference]: Start difference. First operand 397 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-10-17 10:25:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:33,866 INFO L93 Difference]: Finished difference Result 882 states and 1333 transitions. [2022-10-17 10:25:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:25:33,867 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 122 [2022-10-17 10:25:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:33,871 INFO L225 Difference]: With dead ends: 882 [2022-10-17 10:25:33,871 INFO L226 Difference]: Without dead ends: 512 [2022-10-17 10:25:33,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 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 10:25:33,874 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1320 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3377 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:25:33,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1676 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3377 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:25:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-10-17 10:25:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2022-10-17 10:25:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 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 10:25:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 598 transitions. [2022-10-17 10:25:33,927 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 598 transitions. Word has length 122 [2022-10-17 10:25:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:33,928 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 598 transitions. [2022-10-17 10:25:33,928 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-10-17 10:25:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 598 transitions. [2022-10-17 10:25:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:25:33,932 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:33,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:33,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:25:33,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1444147897, now seen corresponding path program 2 times [2022-10-17 10:25:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:33,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912074242] [2022-10-17 10:25:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:25:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:25:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:25:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:25:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:25:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:25:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:25:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:25:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:25:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:25:34,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912074242] [2022-10-17 10:25:34,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912074242] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:34,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:34,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:25:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529979264] [2022-10-17 10:25:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:25:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:25:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:25:34,219 INFO L87 Difference]: Start difference. First operand 397 states and 598 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-10-17 10:25:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:36,890 INFO L93 Difference]: Finished difference Result 884 states and 1339 transitions. [2022-10-17 10:25:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:25:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2022-10-17 10:25:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:36,897 INFO L225 Difference]: With dead ends: 884 [2022-10-17 10:25:36,897 INFO L226 Difference]: Without dead ends: 514 [2022-10-17 10:25:36,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 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 10:25:36,902 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1315 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:25:36,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1677 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 3410 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:25:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-17 10:25:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 399. [2022-10-17 10:25:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.514657980456026) internal successors, (465), 314 states have internal predecessors, (465), 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 10:25:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 604 transitions. [2022-10-17 10:25:36,957 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 604 transitions. Word has length 123 [2022-10-17 10:25:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:36,958 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 604 transitions. [2022-10-17 10:25:36,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-10-17 10:25:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 604 transitions. [2022-10-17 10:25:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:25:36,961 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:36,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:25:36,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1243671236, now seen corresponding path program 1 times [2022-10-17 10:25:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:36,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046192087] [2022-10-17 10:25:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:36,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:25:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:25:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:25:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:25:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:25:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:25:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:25:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:25:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-17 10:25:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-17 10:25:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046192087] [2022-10-17 10:25:37,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046192087] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:25:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127948988] [2022-10-17 10:25:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:37,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:25:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:37,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:25:37,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:25:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:37,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:25:37,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:25:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:25:37,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:25:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:25:37,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127948988] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:25:37,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:25:37,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-10-17 10:25:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811019998] [2022-10-17 10:25:37,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:25:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:25:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:25:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:25:37,699 INFO L87 Difference]: Start difference. First operand 399 states and 604 transitions. Second operand has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-10-17 10:25:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:42,491 INFO L93 Difference]: Finished difference Result 1563 states and 2567 transitions. [2022-10-17 10:25:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:25:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 124 [2022-10-17 10:25:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:25:42,526 INFO L225 Difference]: With dead ends: 1563 [2022-10-17 10:25:42,526 INFO L226 Difference]: Without dead ends: 1195 [2022-10-17 10:25:42,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:25:42,531 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 3071 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 5821 mSolverCounterSat, 1234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 7055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1234 IncrementalHoareTripleChecker+Valid, 5821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:25:42,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 4083 Invalid, 7055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1234 Valid, 5821 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-17 10:25:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-10-17 10:25:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 727. [2022-10-17 10:25:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 571 states have (on average 1.5691768826619965) internal successors, (896), 578 states have internal predecessors, (896), 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 10:25:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1173 transitions. [2022-10-17 10:25:42,697 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1173 transitions. Word has length 124 [2022-10-17 10:25:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:25:42,698 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1173 transitions. [2022-10-17 10:25:42,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-10-17 10:25:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1173 transitions. [2022-10-17 10:25:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:25:42,704 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:25:42,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:42,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:25:42,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eac108-6642-4bb9-b1dd-0e72a1d8b102/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:25:42,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:25:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -966847354, now seen corresponding path program 1 times [2022-10-17 10:25:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855796851] [2022-10-17 10:25:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:25:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:25:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:25:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:25:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:25:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:25:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:25:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:25:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:25:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:25:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:25:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:25:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:25:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:25:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:25:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:43,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855796851] [2022-10-17 10:25:43,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855796851] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:43,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:43,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:25:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671029359] [2022-10-17 10:25:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:43,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:25:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:25:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:25:43,161 INFO L87 Difference]: Start difference. First operand 727 states and 1173 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)