./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product18.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_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/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_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/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_e8fffa44-3c26-4112-a026-545c3d24ac14/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 e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf --- 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 10:13:52,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:52,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:52,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:52,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:52,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:52,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:52,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:52,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:52,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:52,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:52,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:52,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:52,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:52,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:52,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:52,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:52,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:52,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:52,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:52,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:52,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:52,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:52,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:52,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:52,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:52,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:52,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:52,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:52,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:52,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:52,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:52,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:52,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:52,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:52,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:52,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:52,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:52,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:52,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:52,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:52,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:13:52,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:52,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:52,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:52,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:52,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:13:52,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:13:52,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:52,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:52,479 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:52,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:52,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:13:52,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:52,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:13:52,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:52,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:13:52,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:13:52,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:13:52,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:13:52,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:52,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:52,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:13:52,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:52,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:52,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:13:52,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:52,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:52,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:13:52,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:13:52,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:52,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:13:52,487 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:13:52,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:13:52,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:13:52,488 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_e8fffa44-3c26-4112-a026-545c3d24ac14/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf [2022-10-17 10:13:52,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:52,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:52,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:52,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:52,896 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:52,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-10-17 10:13:52,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/data/29300b2d0/e2f8b1b95b824f7cb4a751dd1c7ccbdc/FLAG672761e20 [2022-10-17 10:13:53,807 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:53,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-10-17 10:13:53,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/data/29300b2d0/e2f8b1b95b824f7cb4a751dd1c7ccbdc/FLAG672761e20 [2022-10-17 10:13:53,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/data/29300b2d0/e2f8b1b95b824f7cb4a751dd1c7ccbdc [2022-10-17 10:13:53,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:53,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:53,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:53,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:53,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:53,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:53" (1/1) ... [2022-10-17 10:13:53,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e189ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:53, skipping insertion in model container [2022-10-17 10:13:53,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:53" (1/1) ... [2022-10-17 10:13:53,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:54,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:54,856 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_e8fffa44-3c26-4112-a026-545c3d24ac14/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-10-17 10:13:54,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:54,872 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:55,018 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_e8fffa44-3c26-4112-a026-545c3d24ac14/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-10-17 10:13:55,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:55,071 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:55,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55 WrapperNode [2022-10-17 10:13:55,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:55,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:55,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:55,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:55,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,221 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 57, calls inlined = 49, statements flattened = 874 [2022-10-17 10:13:55,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:55,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:55,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:55,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:55,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:55,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:55,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:55,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:55,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (1/1) ... [2022-10-17 10:13:55,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:55,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:55,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:55,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 10:13:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 10:13:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 10:13:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 10:13:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 10:13:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 10:13:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 10:13:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 10:13:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 10:13:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 10:13:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 10:13:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 10:13:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 10:13:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 10:13:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 10:13:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 10:13:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 10:13:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:13:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 10:13:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 10:13:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 10:13:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 10:13:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 10:13:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 10:13:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 10:13:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 10:13:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-10-17 10:13:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-10-17 10:13:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 10:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 10:13:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 10:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 10:13:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 10:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 10:13:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 10:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 10:13:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:13:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 10:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 10:13:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:55,765 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:55,768 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:13:56,812 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:13:56,837 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:13:56,838 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:13:56,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:56 BoogieIcfgContainer [2022-10-17 10:13:56,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:13:56,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:13:56,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:13:56,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:13:56,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:13:53" (1/3) ... [2022-10-17 10:13:56,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d082c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:56, skipping insertion in model container [2022-10-17 10:13:56,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:55" (2/3) ... [2022-10-17 10:13:56,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d082c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:56, skipping insertion in model container [2022-10-17 10:13:56,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:56" (3/3) ... [2022-10-17 10:13:56,858 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2022-10-17 10:13:56,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:13:56,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:13:57,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:13:57,030 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;@5d8b760e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:13:57,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:13:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 237 states have (on average 1.540084388185654) internal successors, (365), 239 states have internal predecessors, (365), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-10-17 10:13:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-10-17 10:13:57,068 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:57,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:57,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -135038614, now seen corresponding path program 1 times [2022-10-17 10:13:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:57,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57222563] [2022-10-17 10:13:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:13:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:13:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:13:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:13:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:13:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:13:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 10:13:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:13:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:13:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-17 10:13:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:13:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:13:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:13:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:13:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:13:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:58,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57222563] [2022-10-17 10:13:58,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57222563] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:13:58,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879393296] [2022-10-17 10:13:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:13:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:58,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:13:58,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:13:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:58,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:13:58,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:13:58,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:13:58,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879393296] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:58,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:13:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-10-17 10:13:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222133570] [2022-10-17 10:13:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:13:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:13:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:13:58,875 INFO L87 Difference]: Start difference. First operand has 298 states, 237 states have (on average 1.540084388185654) internal successors, (365), 239 states have internal predecessors, (365), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:13:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:58,981 INFO L93 Difference]: Finished difference Result 442 states and 648 transitions. [2022-10-17 10:13:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:13:58,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-10-17 10:13:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:59,009 INFO L225 Difference]: With dead ends: 442 [2022-10-17 10:13:59,009 INFO L226 Difference]: Without dead ends: 291 [2022-10-17 10:13:59,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 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 10:13:59,020 INFO L413 NwaCegarLoop]: 443 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, 443 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 10:13:59,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-10-17 10:13:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2022-10-17 10:13:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 231 states have (on average 1.5324675324675325) internal successors, (354), 232 states have internal predecessors, (354), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-10-17 10:13:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 435 transitions. [2022-10-17 10:13:59,145 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 435 transitions. Word has length 108 [2022-10-17 10:13:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:59,147 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 435 transitions. [2022-10-17 10:13:59,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:13:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 435 transitions. [2022-10-17 10:13:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-17 10:13:59,158 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:59,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:59,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:59,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:13:59,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1229855178, now seen corresponding path program 1 times [2022-10-17 10:13:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895006727] [2022-10-17 10:13:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:13:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:13:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:13:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:13:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:13:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:13:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:13:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:13:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:13:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:13:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:13:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:13:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:13:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:13:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:13:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:59,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895006727] [2022-10-17 10:13:59,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895006727] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:13:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902227321] [2022-10-17 10:13:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:59,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:13:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:59,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:13:59,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:14:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:14:00,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:14:00,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:14:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902227321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:00,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:14:00,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:14:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821104623] [2022-10-17 10:14:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:14:00,231 INFO L87 Difference]: Start difference. First operand 291 states and 435 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:14:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:00,311 INFO L93 Difference]: Finished difference Result 432 states and 629 transitions. [2022-10-17 10:14:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-10-17 10:14:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:00,322 INFO L225 Difference]: With dead ends: 432 [2022-10-17 10:14:00,322 INFO L226 Difference]: Without dead ends: 294 [2022-10-17 10:14:00,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:14:00,327 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 864 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 10:14:00,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 864 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:14:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-10-17 10:14:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2022-10-17 10:14:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 233 states have (on average 1.5278969957081545) internal successors, (356), 234 states have internal predecessors, (356), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-10-17 10:14:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 437 transitions. [2022-10-17 10:14:00,393 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 437 transitions. Word has length 109 [2022-10-17 10:14:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:00,396 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 437 transitions. [2022-10-17 10:14:00,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:14:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 437 transitions. [2022-10-17 10:14:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:14:00,403 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:00,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:00,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:00,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:00,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash 271940735, now seen corresponding path program 1 times [2022-10-17 10:14:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:00,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410186981] [2022-10-17 10:14:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:14:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:14:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:14:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:00,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:14:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:14:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:14:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:14:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:14:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:14:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:14:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:14:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:14:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410186981] [2022-10-17 10:14:01,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410186981] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988053450] [2022-10-17 10:14:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:01,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:01,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:01,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:01,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:14:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:14:01,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:14:01,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:14:01,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988053450] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:01,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:14:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-10-17 10:14:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661046503] [2022-10-17 10:14:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:01,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:14:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:14:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:14:01,436 INFO L87 Difference]: Start difference. First operand 293 states and 437 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 10:14:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:01,479 INFO L93 Difference]: Finished difference Result 616 states and 933 transitions. [2022-10-17 10:14:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:14:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-10-17 10:14:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:01,485 INFO L225 Difference]: With dead ends: 616 [2022-10-17 10:14:01,486 INFO L226 Difference]: Without dead ends: 350 [2022-10-17 10:14:01,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 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 10:14:01,491 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 107 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 838 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 10:14:01,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 838 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:14:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-10-17 10:14:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-10-17 10:14:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 271 states have (on average 1.5424354243542435) internal successors, (418), 272 states have internal predecessors, (418), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-17 10:14:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 521 transitions. [2022-10-17 10:14:01,544 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 521 transitions. Word has length 118 [2022-10-17 10:14:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:01,546 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 521 transitions. [2022-10-17 10:14:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 10:14:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 521 transitions. [2022-10-17 10:14:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 10:14:01,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:01,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:01,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:01,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2073417175, now seen corresponding path program 1 times [2022-10-17 10:14:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:01,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024771805] [2022-10-17 10:14:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:14:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:14:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:14:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:14:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:14:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:14:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:14:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:14:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:14:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:14:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:14:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:14:02,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:02,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024771805] [2022-10-17 10:14:02,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024771805] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:02,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137318052] [2022-10-17 10:14:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:02,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:02,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:14:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:14:02,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:14:02,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:14:02,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137318052] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:02,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:14:02,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 10:14:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012757182] [2022-10-17 10:14:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:14:02,549 INFO L87 Difference]: Start difference. First operand 342 states and 521 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 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 10:14:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:02,683 INFO L93 Difference]: Finished difference Result 675 states and 1032 transitions. [2022-10-17 10:14:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:14:02,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-10-17 10:14:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:02,691 INFO L225 Difference]: With dead ends: 675 [2022-10-17 10:14:02,691 INFO L226 Difference]: Without dead ends: 344 [2022-10-17 10:14:02,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 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 10:14:02,702 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 125 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1559 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 10:14:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1559 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:14:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-10-17 10:14:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-10-17 10:14:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 272 states have (on average 1.5404411764705883) internal successors, (419), 274 states have internal predecessors, (419), 52 states have call successors, (52), 18 states have call predecessors, (52), 19 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-10-17 10:14:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 524 transitions. [2022-10-17 10:14:02,747 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 524 transitions. Word has length 119 [2022-10-17 10:14:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:02,748 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 524 transitions. [2022-10-17 10:14:02,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 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 10:14:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 524 transitions. [2022-10-17 10:14:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-17 10:14:02,754 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:02,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:02,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:02,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash 309399835, now seen corresponding path program 1 times [2022-10-17 10:14:02,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:02,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218222534] [2022-10-17 10:14:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:02,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:14:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:14:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:14:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:14:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:14:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-17 10:14:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-10-17 10:14:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:14:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-17 10:14:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-17 10:14:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:14:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218222534] [2022-10-17 10:14:03,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218222534] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778127512] [2022-10-17 10:14:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:03,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:03,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:03,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:03,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:14:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:03,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:14:03,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:14:03,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:14:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778127512] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:03,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:14:03,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-10-17 10:14:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699080320] [2022-10-17 10:14:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:03,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:14:03,847 INFO L87 Difference]: Start difference. First operand 344 states and 524 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 10:14:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:03,963 INFO L93 Difference]: Finished difference Result 677 states and 1037 transitions. [2022-10-17 10:14:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:14:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-10-17 10:14:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:03,968 INFO L225 Difference]: With dead ends: 677 [2022-10-17 10:14:03,968 INFO L226 Difference]: Without dead ends: 346 [2022-10-17 10:14:03,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 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 10:14:03,971 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 124 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1548 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 10:14:03,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1548 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:14:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-10-17 10:14:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-10-17 10:14:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 273 states have (on average 1.5384615384615385) internal successors, (420), 276 states have internal predecessors, (420), 52 states have call successors, (52), 18 states have call predecessors, (52), 20 states have return successors, (58), 51 states have call predecessors, (58), 51 states have call successors, (58) [2022-10-17 10:14:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 530 transitions. [2022-10-17 10:14:04,009 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 530 transitions. Word has length 120 [2022-10-17 10:14:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:04,011 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 530 transitions. [2022-10-17 10:14:04,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 10:14:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 530 transitions. [2022-10-17 10:14:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:14:04,017 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:04,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:04,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:14:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:04,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 257737305, now seen corresponding path program 1 times [2022-10-17 10:14:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951237973] [2022-10-17 10:14:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:14:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:14:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:14:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:14:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:14:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:14:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:14:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-17 10:14:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:14:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-17 10:14:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:14:04,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:04,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951237973] [2022-10-17 10:14:04,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951237973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:04,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:04,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:14:04,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167969582] [2022-10-17 10:14:04,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:14:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:14:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:14:04,597 INFO L87 Difference]: Start difference. First operand 346 states and 530 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 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 10:14:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:06,714 INFO L93 Difference]: Finished difference Result 767 states and 1177 transitions. [2022-10-17 10:14:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:14:06,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 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 10:14:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:06,721 INFO L225 Difference]: With dead ends: 767 [2022-10-17 10:14:06,721 INFO L226 Difference]: Without dead ends: 444 [2022-10-17 10:14:06,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:14:06,724 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1035 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:06,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1310 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:14:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-10-17 10:14:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-10-17 10:14:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 273 states have (on average 1.5384615384615385) internal successors, (420), 276 states have internal predecessors, (420), 52 states have call successors, (52), 18 states have call predecessors, (52), 20 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-10-17 10:14:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 529 transitions. [2022-10-17 10:14:06,787 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 529 transitions. Word has length 121 [2022-10-17 10:14:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:06,788 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 529 transitions. [2022-10-17 10:14:06,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 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 10:14:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 529 transitions. [2022-10-17 10:14:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 10:14:06,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:06,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:06,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:14:06,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1611009385, now seen corresponding path program 2 times [2022-10-17 10:14:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:06,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979155769] [2022-10-17 10:14:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:06,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:14:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:14:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:14:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:14:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-17 10:14:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:14:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:14:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:14:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:14:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-17 10:14:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:14:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979155769] [2022-10-17 10:14:07,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979155769] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:07,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:07,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:14:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129902219] [2022-10-17 10:14:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:14:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:14:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:14:07,104 INFO L87 Difference]: Start difference. First operand 346 states and 529 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 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 10:14:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:09,085 INFO L93 Difference]: Finished difference Result 769 states and 1180 transitions. [2022-10-17 10:14:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:14:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 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 122 [2022-10-17 10:14:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:09,095 INFO L225 Difference]: With dead ends: 769 [2022-10-17 10:14:09,095 INFO L226 Difference]: Without dead ends: 446 [2022-10-17 10:14:09,097 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 10:14:09,099 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1030 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:09,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1311 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:14:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-17 10:14:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 348. [2022-10-17 10:14:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 274 states have (on average 1.5364963503649636) internal successors, (421), 278 states have internal predecessors, (421), 52 states have call successors, (52), 18 states have call predecessors, (52), 21 states have return successors, (59), 51 states have call predecessors, (59), 51 states have call successors, (59) [2022-10-17 10:14:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 532 transitions. [2022-10-17 10:14:09,181 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 532 transitions. Word has length 122 [2022-10-17 10:14:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:09,181 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 532 transitions. [2022-10-17 10:14:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 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 10:14:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 532 transitions. [2022-10-17 10:14:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:14:09,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:09,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:09,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:14:09,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:09,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1294563998, now seen corresponding path program 1 times [2022-10-17 10:14:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308125489] [2022-10-17 10:14:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:14:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:14:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:14:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-17 10:14:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:14:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:14:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:14:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:14:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:14:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:14:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:14:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308125489] [2022-10-17 10:14:09,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308125489] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:09,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:09,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:14:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023125513] [2022-10-17 10:14:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:09,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:14:09,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:09,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:14:09,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:14:09,621 INFO L87 Difference]: Start difference. First operand 348 states and 532 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 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 10:14:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:12,357 INFO L93 Difference]: Finished difference Result 767 states and 1175 transitions. [2022-10-17 10:14:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:14:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 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 10:14:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:12,364 INFO L225 Difference]: With dead ends: 767 [2022-10-17 10:14:12,364 INFO L226 Difference]: Without dead ends: 446 [2022-10-17 10:14:12,366 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 10:14:12,367 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1142 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:12,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1607 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:14:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-17 10:14:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 348. [2022-10-17 10:14:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 274 states have (on average 1.5364963503649636) internal successors, (421), 278 states have internal predecessors, (421), 52 states have call successors, (52), 18 states have call predecessors, (52), 21 states have return successors, (58), 51 states have call predecessors, (58), 51 states have call successors, (58) [2022-10-17 10:14:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 531 transitions. [2022-10-17 10:14:12,421 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 531 transitions. Word has length 123 [2022-10-17 10:14:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:12,421 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 531 transitions. [2022-10-17 10:14:12,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 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 10:14:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 531 transitions. [2022-10-17 10:14:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:14:12,427 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:12,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:12,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:14:12,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1792458384, now seen corresponding path program 2 times [2022-10-17 10:14:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:12,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251386619] [2022-10-17 10:14:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:14:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:14:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:14:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:14:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:14:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:14:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:14:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:14:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:14:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:14:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:14:12,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:12,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251386619] [2022-10-17 10:14:12,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251386619] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:12,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:12,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:14:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841179127] [2022-10-17 10:14:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:14:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:14:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:14:12,803 INFO L87 Difference]: Start difference. First operand 348 states and 531 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 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 10:14:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:15,591 INFO L93 Difference]: Finished difference Result 769 states and 1181 transitions. [2022-10-17 10:14:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:14:15,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 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 124 [2022-10-17 10:14:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:15,598 INFO L225 Difference]: With dead ends: 769 [2022-10-17 10:14:15,598 INFO L226 Difference]: Without dead ends: 448 [2022-10-17 10:14:15,600 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 10:14:15,604 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1137 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:15,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1608 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:14:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-10-17 10:14:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 350. [2022-10-17 10:14:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 275 states have (on average 1.5345454545454544) internal successors, (422), 280 states have internal predecessors, (422), 52 states have call successors, (52), 18 states have call predecessors, (52), 22 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2022-10-17 10:14:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 537 transitions. [2022-10-17 10:14:15,691 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 537 transitions. Word has length 124 [2022-10-17 10:14:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:15,692 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 537 transitions. [2022-10-17 10:14:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 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 10:14:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 537 transitions. [2022-10-17 10:14:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:14:15,697 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:15,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:15,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:14:15,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1350499613, now seen corresponding path program 1 times [2022-10-17 10:14:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:15,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023329122] [2022-10-17 10:14:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:14:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:14:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:14:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 10:14:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:14:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:14:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:14:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:14:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:14:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:14:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:14:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:14:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-17 10:14:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-17 10:14:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-17 10:14:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023329122] [2022-10-17 10:14:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023329122] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:14:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487429808] [2022-10-17 10:14:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:16,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:14:16,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:16,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:14:16,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fffa44-3c26-4112-a026-545c3d24ac14/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:14:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:16,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:14:16,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:14:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:14:16,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:14:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:14:16,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487429808] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:14:16,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:14:16,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-10-17 10:14:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137770951] [2022-10-17 10:14:16,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:14:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:14:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:14:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:14:16,597 INFO L87 Difference]: Start difference. First operand 350 states and 537 transitions. Second operand has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 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)