./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:49:19,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:49:19,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:49:19,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:49:19,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:49:19,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:49:19,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:49:19,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:49:19,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:49:19,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:49:19,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:49:19,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:49:19,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:49:19,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:49:19,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:49:19,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:49:19,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:49:19,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:49:19,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:49:19,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:49:19,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:49:19,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:49:19,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:49:19,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:49:19,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:49:19,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:49:19,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:49:19,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:49:19,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:49:19,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:49:19,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:49:19,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:49:19,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:49:19,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:49:19,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:49:19,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:49:19,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:49:19,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:49:19,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:49:19,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:49:19,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:49:19,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:49:19,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:49:19,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:49:19,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:49:19,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:49:19,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:49:19,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:49:19,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:49:19,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:49:19,364 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:49:19,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:49:19,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:49:19,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:49:19,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:49:19,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:49:19,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:49:19,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:49:19,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:49:19,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:49:19,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:49:19,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:49:19,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:49:19,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:49:19,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:49:19,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:49:19,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:49:19,370 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:49:19,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:49:19,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:49:19,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:49:19,371 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 [2021-12-16 00:49:19,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:49:19,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:49:19,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:49:19,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:49:19,637 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:49:19,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2021-12-16 00:49:19,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c23d5226/e57f65c3c613407aa17c7222b7c0a56c/FLAG6efccc760 [2021-12-16 00:49:20,231 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:49:20,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2021-12-16 00:49:20,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c23d5226/e57f65c3c613407aa17c7222b7c0a56c/FLAG6efccc760 [2021-12-16 00:49:20,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c23d5226/e57f65c3c613407aa17c7222b7c0a56c [2021-12-16 00:49:20,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:49:20,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:49:20,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:49:20,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:49:20,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:49:20,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:49:20" (1/1) ... [2021-12-16 00:49:20,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de36661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:20, skipping insertion in model container [2021-12-16 00:49:20,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:49:20" (1/1) ... [2021-12-16 00:49:20,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:49:20,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:49:21,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2021-12-16 00:49:21,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:49:21,261 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:49:21,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2021-12-16 00:49:21,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:49:21,374 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:49:21,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21 WrapperNode [2021-12-16 00:49:21,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:49:21,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:49:21,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:49:21,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:49:21,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,485 INFO L137 Inliner]: procedures = 130, calls = 210, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1001 [2021-12-16 00:49:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:49:21,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:49:21,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:49:21,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:49:21,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:49:21,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:49:21,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:49:21,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:49:21,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (1/1) ... [2021-12-16 00:49:21,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:49:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:21,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 00:49:21,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 00:49:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:49:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:49:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:49:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:49:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-16 00:49:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-16 00:49:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:49:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:49:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-16 00:49:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-16 00:49:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:49:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:49:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:49:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-16 00:49:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-16 00:49:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-16 00:49:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-16 00:49:21,675 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:49:21,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:49:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:49:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-16 00:49:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-16 00:49:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:49:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:49:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:49:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:49:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:49:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-16 00:49:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-16 00:49:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:49:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:49:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:49:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:49:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:49:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:49:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:49:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:49:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:49:21,912 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:49:21,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:49:22,563 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:49:22,577 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:49:22,577 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:49:22,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:49:22 BoogieIcfgContainer [2021-12-16 00:49:22,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:49:22,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:49:22,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:49:22,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:49:22,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:49:20" (1/3) ... [2021-12-16 00:49:22,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afe7eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:49:22, skipping insertion in model container [2021-12-16 00:49:22,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:49:21" (2/3) ... [2021-12-16 00:49:22,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afe7eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:49:22, skipping insertion in model container [2021-12-16 00:49:22,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:49:22" (3/3) ... [2021-12-16 00:49:22,609 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2021-12-16 00:49:22,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:49:22,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:49:22,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:49:22,673 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:49:22,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:49:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 262 states have (on average 1.5229007633587786) internal successors, (399), 264 states have internal predecessors, (399), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 00:49:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 00:49:22,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:22,717 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:22,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1883857664, now seen corresponding path program 1 times [2021-12-16 00:49:22,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888279481] [2021-12-16 00:49:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:22,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:49:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:49:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:49:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:49:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:49:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:49:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:49:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:49:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:49:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:49:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:49:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 00:49:23,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888279481] [2021-12-16 00:49:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888279481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462144096] [2021-12-16 00:49:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:23,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:23,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:23,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:49:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:49:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:49:23,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:49:23,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462144096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:23,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:49:23,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:49:23,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001628949] [2021-12-16 00:49:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:23,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:49:23,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:49:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:49:23,679 INFO L87 Difference]: Start difference. First operand has 333 states, 262 states have (on average 1.5229007633587786) internal successors, (399), 264 states have internal predecessors, (399), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) 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) [2021-12-16 00:49:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:23,722 INFO L93 Difference]: Finished difference Result 507 states and 744 transitions. [2021-12-16 00:49:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:49:23,724 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 [2021-12-16 00:49:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:23,735 INFO L225 Difference]: With dead ends: 507 [2021-12-16 00:49:23,736 INFO L226 Difference]: Without dead ends: 326 [2021-12-16 00:49:23,740 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:49:23,743 INFO L933 BasicCegarLoop]: 495 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, 495 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 [2021-12-16 00:49:23,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:49:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-16 00:49:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-12-16 00:49:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 256 states have (on average 1.515625) internal successors, (388), 257 states have internal predecessors, (388), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 00:49:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 487 transitions. [2021-12-16 00:49:23,819 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 487 transitions. Word has length 108 [2021-12-16 00:49:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:23,822 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 487 transitions. [2021-12-16 00:49:23,822 INFO L471 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) [2021-12-16 00:49:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 487 transitions. [2021-12-16 00:49:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 00:49:23,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:23,830 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:23,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:24,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 00:49:24,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -670614014, now seen corresponding path program 1 times [2021-12-16 00:49:24,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883742728] [2021-12-16 00:49:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:24,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:49:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:49:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:49:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:49:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:49:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:49:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:49:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:49:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:49:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:49:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:49:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 00:49:24,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883742728] [2021-12-16 00:49:24,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883742728] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935636947] [2021-12-16 00:49:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:24,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:24,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:24,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:49:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:24,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:49:24,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:49:24,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:49:24,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935636947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:24,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:49:24,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:49:24,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967810097] [2021-12-16 00:49:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:24,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:49:24,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:49:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:49:24,742 INFO L87 Difference]: Start difference. First operand 326 states and 487 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) [2021-12-16 00:49:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:24,794 INFO L93 Difference]: Finished difference Result 497 states and 725 transitions. [2021-12-16 00:49:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:49:24,808 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 [2021-12-16 00:49:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:24,811 INFO L225 Difference]: With dead ends: 497 [2021-12-16 00:49:24,811 INFO L226 Difference]: Without dead ends: 329 [2021-12-16 00:49:24,814 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:49:24,815 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 [2021-12-16 00:49:24,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:49:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-16 00:49:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2021-12-16 00:49:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 258 states have (on average 1.5116279069767442) internal successors, (390), 259 states have internal predecessors, (390), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 00:49:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 489 transitions. [2021-12-16 00:49:24,838 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 489 transitions. Word has length 109 [2021-12-16 00:49:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:24,838 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 489 transitions. [2021-12-16 00:49:24,839 INFO L471 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) [2021-12-16 00:49:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 489 transitions. [2021-12-16 00:49:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 00:49:24,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:24,841 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:24,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:25,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 00:49:25,062 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1179541973, now seen corresponding path program 1 times [2021-12-16 00:49:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:25,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189083348] [2021-12-16 00:49:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:49:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:49:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:49:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:49:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:49:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:49:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:49:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:49:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:49:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:49:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:49:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:49:25,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189083348] [2021-12-16 00:49:25,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189083348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:25,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249046099] [2021-12-16 00:49:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:25,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:25,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:25,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:49:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:25,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:49:25,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:49:25,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:49:25,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249046099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:25,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:49:25,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:49:25,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484154160] [2021-12-16 00:49:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:49:25,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:49:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:49:25,676 INFO L87 Difference]: Start difference. First operand 328 states and 489 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) [2021-12-16 00:49:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:25,713 INFO L93 Difference]: Finished difference Result 691 states and 1045 transitions. [2021-12-16 00:49:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:49:25,714 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 [2021-12-16 00:49:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:25,717 INFO L225 Difference]: With dead ends: 691 [2021-12-16 00:49:25,717 INFO L226 Difference]: Without dead ends: 390 [2021-12-16 00:49:25,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:49:25,719 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 115 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 938 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 [2021-12-16 00:49:25,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 938 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:49:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-16 00:49:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 382. [2021-12-16 00:49:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 301 states have (on average 1.5282392026578073) internal successors, (460), 302 states have internal predecessors, (460), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-16 00:49:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 581 transitions. [2021-12-16 00:49:25,747 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 581 transitions. Word has length 118 [2021-12-16 00:49:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:25,747 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 581 transitions. [2021-12-16 00:49:25,748 INFO L471 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) [2021-12-16 00:49:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 581 transitions. [2021-12-16 00:49:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 00:49:25,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:25,750 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:25,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:25,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:25,959 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -769525707, now seen corresponding path program 1 times [2021-12-16 00:49:25,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:25,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263122381] [2021-12-16 00:49:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:25,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:49:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:49:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:49:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:49:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:49:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:49:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:49:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:49:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:49:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:49:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:49:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:49:26,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:26,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263122381] [2021-12-16 00:49:26,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263122381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:26,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511557586] [2021-12-16 00:49:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:26,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:26,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:26,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:49:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:26,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:49:26,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 00:49:26,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:49:26,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511557586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:26,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:49:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:49:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791718714] [2021-12-16 00:49:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:49:26,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:49:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:49:26,616 INFO L87 Difference]: Start difference. First operand 382 states and 581 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) [2021-12-16 00:49:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:26,692 INFO L93 Difference]: Finished difference Result 755 states and 1152 transitions. [2021-12-16 00:49:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:49:26,693 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 [2021-12-16 00:49:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:26,697 INFO L225 Difference]: With dead ends: 755 [2021-12-16 00:49:26,697 INFO L226 Difference]: Without dead ends: 384 [2021-12-16 00:49:26,698 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:49:26,699 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:26,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1760 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:49:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-16 00:49:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-12-16 00:49:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 302 states have (on average 1.5264900662251655) internal successors, (461), 304 states have internal predecessors, (461), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-16 00:49:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 584 transitions. [2021-12-16 00:49:26,720 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 584 transitions. Word has length 119 [2021-12-16 00:49:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:26,720 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 584 transitions. [2021-12-16 00:49:26,721 INFO L471 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) [2021-12-16 00:49:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 584 transitions. [2021-12-16 00:49:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 00:49:26,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:26,723 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:26,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:26,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:26,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash -682075489, now seen corresponding path program 1 times [2021-12-16 00:49:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045451174] [2021-12-16 00:49:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:26,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:49:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:49:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:49:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:49:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:49:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:49:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:49:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:49:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:49:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:49:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:49:27,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:27,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045451174] [2021-12-16 00:49:27,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045451174] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:27,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687546867] [2021-12-16 00:49:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:27,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:27,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:27,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:49:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:49:27,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 00:49:27,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:49:27,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687546867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:27,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:49:27,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:49:27,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710897624] [2021-12-16 00:49:27,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:27,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:49:27,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:49:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:49:27,578 INFO L87 Difference]: Start difference. First operand 384 states and 584 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) [2021-12-16 00:49:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:27,635 INFO L93 Difference]: Finished difference Result 757 states and 1157 transitions. [2021-12-16 00:49:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:49:27,636 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 [2021-12-16 00:49:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:27,638 INFO L225 Difference]: With dead ends: 757 [2021-12-16 00:49:27,639 INFO L226 Difference]: Without dead ends: 386 [2021-12-16 00:49:27,640 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:49:27,641 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:27,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1749 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:49:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-16 00:49:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-12-16 00:49:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 303 states have (on average 1.5247524752475248) internal successors, (462), 306 states have internal predecessors, (462), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-16 00:49:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 590 transitions. [2021-12-16 00:49:27,659 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 590 transitions. Word has length 120 [2021-12-16 00:49:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:27,659 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 590 transitions. [2021-12-16 00:49:27,659 INFO L471 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) [2021-12-16 00:49:27,660 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 590 transitions. [2021-12-16 00:49:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 00:49:27,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:27,662 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:27,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:27,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:27,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1727763941, now seen corresponding path program 1 times [2021-12-16 00:49:27,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:27,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539618049] [2021-12-16 00:49:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:27,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:49:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:49:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:49:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:49:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:49:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:49:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:49:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:49:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:49:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:49:28,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:28,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539618049] [2021-12-16 00:49:28,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539618049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:28,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:28,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:49:28,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34323591] [2021-12-16 00:49:28,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:28,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:49:28,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:49:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:49:28,008 INFO L87 Difference]: Start difference. First operand 386 states and 590 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) [2021-12-16 00:49:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:29,678 INFO L93 Difference]: Finished difference Result 928 states and 1427 transitions. [2021-12-16 00:49:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:49:29,679 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 [2021-12-16 00:49:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:29,683 INFO L225 Difference]: With dead ends: 928 [2021-12-16 00:49:29,683 INFO L226 Difference]: Without dead ends: 565 [2021-12-16 00:49:29,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:49:29,685 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1178 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:29,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 1746 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 00:49:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-12-16 00:49:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 386. [2021-12-16 00:49:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 303 states have (on average 1.5247524752475248) internal successors, (462), 306 states have internal predecessors, (462), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-16 00:49:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 589 transitions. [2021-12-16 00:49:29,714 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 589 transitions. Word has length 121 [2021-12-16 00:49:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:29,715 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 589 transitions. [2021-12-16 00:49:29,715 INFO L471 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) [2021-12-16 00:49:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 589 transitions. [2021-12-16 00:49:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 00:49:29,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:29,718 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:29,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:49:29,718 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -9401821, now seen corresponding path program 2 times [2021-12-16 00:49:29,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575029830] [2021-12-16 00:49:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:29,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:49:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:49:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:49:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:49:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:49:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:49:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:49:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:49:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:49:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:49:29,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575029830] [2021-12-16 00:49:29,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575029830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:29,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:29,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:49:29,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860862673] [2021-12-16 00:49:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:49:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:49:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:49:29,823 INFO L87 Difference]: Start difference. First operand 386 states and 589 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) [2021-12-16 00:49:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:31,461 INFO L93 Difference]: Finished difference Result 930 states and 1430 transitions. [2021-12-16 00:49:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:49:31,461 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 [2021-12-16 00:49:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:31,467 INFO L225 Difference]: With dead ends: 930 [2021-12-16 00:49:31,467 INFO L226 Difference]: Without dead ends: 567 [2021-12-16 00:49:31,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:49:31,469 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1172 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:31,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 1752 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 00:49:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-16 00:49:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 388. [2021-12-16 00:49:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 304 states have (on average 1.5230263157894737) internal successors, (463), 308 states have internal predecessors, (463), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-16 00:49:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 592 transitions. [2021-12-16 00:49:31,505 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 592 transitions. Word has length 122 [2021-12-16 00:49:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:31,507 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 592 transitions. [2021-12-16 00:49:31,508 INFO L471 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) [2021-12-16 00:49:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 592 transitions. [2021-12-16 00:49:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 00:49:31,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:31,510 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:31,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:49:31,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1892957856, now seen corresponding path program 1 times [2021-12-16 00:49:31,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:31,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435892738] [2021-12-16 00:49:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:31,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:49:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:49:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:49:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:49:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:49:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:49:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:49:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:49:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:49:31,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435892738] [2021-12-16 00:49:31,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435892738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:31,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:31,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:49:31,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528797153] [2021-12-16 00:49:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:49:31,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:49:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:49:31,673 INFO L87 Difference]: Start difference. First operand 388 states and 592 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) [2021-12-16 00:49:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:33,821 INFO L93 Difference]: Finished difference Result 928 states and 1425 transitions. [2021-12-16 00:49:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:49:33,822 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 [2021-12-16 00:49:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:33,825 INFO L225 Difference]: With dead ends: 928 [2021-12-16 00:49:33,825 INFO L226 Difference]: Without dead ends: 567 [2021-12-16 00:49:33,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:49:33,827 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1292 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 3902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:33,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 2287 Invalid, 3902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 00:49:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-16 00:49:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 388. [2021-12-16 00:49:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 304 states have (on average 1.5230263157894737) internal successors, (463), 308 states have internal predecessors, (463), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-16 00:49:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 591 transitions. [2021-12-16 00:49:33,851 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 591 transitions. Word has length 123 [2021-12-16 00:49:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 591 transitions. [2021-12-16 00:49:33,852 INFO L471 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) [2021-12-16 00:49:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 591 transitions. [2021-12-16 00:49:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 00:49:33,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:33,854 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:33,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:49:33,855 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash -998290720, now seen corresponding path program 2 times [2021-12-16 00:49:33,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:33,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962361102] [2021-12-16 00:49:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:33,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:49:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:49:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:49:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:49:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:49:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:49:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:49:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:49:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 00:49:33,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:33,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962361102] [2021-12-16 00:49:33,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962361102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:33,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:33,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:49:33,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682428578] [2021-12-16 00:49:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:33,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:49:33,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:49:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:49:33,978 INFO L87 Difference]: Start difference. First operand 388 states and 591 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) [2021-12-16 00:49:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:36,175 INFO L93 Difference]: Finished difference Result 930 states and 1431 transitions. [2021-12-16 00:49:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:49:36,175 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 [2021-12-16 00:49:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:36,179 INFO L225 Difference]: With dead ends: 930 [2021-12-16 00:49:36,179 INFO L226 Difference]: Without dead ends: 569 [2021-12-16 00:49:36,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:49:36,181 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1288 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:36,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 2281 Invalid, 3921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 00:49:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-12-16 00:49:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 390. [2021-12-16 00:49:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 305 states have (on average 1.521311475409836) internal successors, (464), 310 states have internal predecessors, (464), 61 states have call successors, (61), 19 states have call predecessors, (61), 23 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-16 00:49:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2021-12-16 00:49:36,207 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 124 [2021-12-16 00:49:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:36,208 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2021-12-16 00:49:36,209 INFO L471 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) [2021-12-16 00:49:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2021-12-16 00:49:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 00:49:36,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:36,211 INFO L514 BasicCegarLoop]: 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] [2021-12-16 00:49:36,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:49:36,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1678008475, now seen corresponding path program 1 times [2021-12-16 00:49:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862086735] [2021-12-16 00:49:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:36,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:49:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:49:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:49:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:49:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:49:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:49:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:49:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:49:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-16 00:49:36,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862086735] [2021-12-16 00:49:36,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862086735] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:49:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438863367] [2021-12-16 00:49:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:36,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:49:36,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:49:36,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:49:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:36,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:49:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:49:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:36,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:49:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:37,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438863367] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:49:37,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:49:37,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-16 00:49:37,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761302849] [2021-12-16 00:49:37,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:49:37,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 00:49:37,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 00:49:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:49:37,035 INFO L87 Difference]: Start difference. First operand 390 states and 597 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) [2021-12-16 00:49:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:40,137 INFO L93 Difference]: Finished difference Result 1659 states and 2739 transitions. [2021-12-16 00:49:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 00:49:40,138 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 125 [2021-12-16 00:49:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:40,146 INFO L225 Difference]: With dead ends: 1659 [2021-12-16 00:49:40,146 INFO L226 Difference]: Without dead ends: 1300 [2021-12-16 00:49:40,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-16 00:49:40,149 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 3589 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 4903 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 6279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 4903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:40,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 3668 Invalid, 6279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 4903 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 00:49:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-12-16 00:49:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 743. [2021-12-16 00:49:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 594 states have (on average 1.5740740740740742) internal successors, (935), 599 states have internal predecessors, (935), 125 states have call successors, (125), 19 states have call predecessors, (125), 23 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-16 00:49:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1206 transitions. [2021-12-16 00:49:40,209 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1206 transitions. Word has length 125 [2021-12-16 00:49:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:40,209 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1206 transitions. [2021-12-16 00:49:40,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-16 00:49:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1206 transitions. [2021-12-16 00:49:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 00:49:40,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:40,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:40,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:49:40,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:49:40,440 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 49647564, now seen corresponding path program 1 times [2021-12-16 00:49:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:40,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186942344] [2021-12-16 00:49:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:40,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:49:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:49:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:49:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:49:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:49:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:49:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:49:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:49:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:40,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:40,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186942344] [2021-12-16 00:49:40,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186942344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:40,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:40,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:40,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121286919] [2021-12-16 00:49:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:40,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:40,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:40,554 INFO L87 Difference]: Start difference. First operand 743 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:41,752 INFO L93 Difference]: Finished difference Result 1920 states and 3182 transitions. [2021-12-16 00:49:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-16 00:49:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:41,759 INFO L225 Difference]: With dead ends: 1920 [2021-12-16 00:49:41,759 INFO L226 Difference]: Without dead ends: 1255 [2021-12-16 00:49:41,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:41,761 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1168 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:41,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1449 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-16 00:49:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1068. [2021-12-16 00:49:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 855 states have (on average 1.590643274853801) internal successors, (1360), 860 states have internal predecessors, (1360), 189 states have call successors, (189), 19 states have call predecessors, (189), 23 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-16 00:49:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1769 transitions. [2021-12-16 00:49:41,830 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1769 transitions. Word has length 128 [2021-12-16 00:49:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:41,831 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1769 transitions. [2021-12-16 00:49:41,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1769 transitions. [2021-12-16 00:49:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-16 00:49:41,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:41,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:41,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:49:41,836 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash -730772503, now seen corresponding path program 1 times [2021-12-16 00:49:41,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:41,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298665605] [2021-12-16 00:49:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:41,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:49:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:49:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:49:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:49:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:49:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:49:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:49:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:49:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:41,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:41,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298665605] [2021-12-16 00:49:41,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298665605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:41,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:41,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:41,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757441530] [2021-12-16 00:49:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:41,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:41,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:41,930 INFO L87 Difference]: Start difference. First operand 1068 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:43,059 INFO L93 Difference]: Finished difference Result 2725 states and 4566 transitions. [2021-12-16 00:49:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:43,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-16 00:49:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:43,068 INFO L225 Difference]: With dead ends: 2725 [2021-12-16 00:49:43,068 INFO L226 Difference]: Without dead ends: 1788 [2021-12-16 00:49:43,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:43,072 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1166 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:43,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 1419 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-12-16 00:49:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1601. [2021-12-16 00:49:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1293 states have (on average 1.5978344934261408) internal successors, (2066), 1298 states have internal predecessors, (2066), 284 states have call successors, (284), 19 states have call predecessors, (284), 23 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-16 00:49:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2665 transitions. [2021-12-16 00:49:43,177 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2665 transitions. Word has length 129 [2021-12-16 00:49:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:43,178 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2665 transitions. [2021-12-16 00:49:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2665 transitions. [2021-12-16 00:49:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 00:49:43,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:43,187 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:49:43,188 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1030544222, now seen corresponding path program 1 times [2021-12-16 00:49:43,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:43,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094987704] [2021-12-16 00:49:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:43,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:49:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:49:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:49:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:49:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:49:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:49:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:49:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:49:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:43,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094987704] [2021-12-16 00:49:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094987704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:43,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725798903] [2021-12-16 00:49:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:43,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:43,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:43,304 INFO L87 Difference]: Start difference. First operand 1601 states and 2665 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:44,541 INFO L93 Difference]: Finished difference Result 3932 states and 6652 transitions. [2021-12-16 00:49:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-16 00:49:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:44,554 INFO L225 Difference]: With dead ends: 3932 [2021-12-16 00:49:44,554 INFO L226 Difference]: Without dead ends: 2597 [2021-12-16 00:49:44,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:44,558 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1164 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:44,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1417 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-12-16 00:49:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2410. [2021-12-16 00:49:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 1979 states have (on average 1.6033350176856997) internal successors, (3173), 1984 states have internal predecessors, (3173), 407 states have call successors, (407), 19 states have call predecessors, (407), 23 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-16 00:49:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4034 transitions. [2021-12-16 00:49:44,720 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4034 transitions. Word has length 130 [2021-12-16 00:49:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 4034 transitions. [2021-12-16 00:49:44,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4034 transitions. [2021-12-16 00:49:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-16 00:49:44,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:44,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:44,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:49:44,733 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash 19997000, now seen corresponding path program 1 times [2021-12-16 00:49:44,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35491209] [2021-12-16 00:49:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:44,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:49:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:49:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:49:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:49:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:49:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:49:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:49:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:49:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:44,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35491209] [2021-12-16 00:49:44,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35491209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:44,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:44,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:44,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227238654] [2021-12-16 00:49:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:44,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:44,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:44,831 INFO L87 Difference]: Start difference. First operand 2410 states and 4034 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:46,134 INFO L93 Difference]: Finished difference Result 5816 states and 9912 transitions. [2021-12-16 00:49:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:46,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-16 00:49:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:46,152 INFO L225 Difference]: With dead ends: 5816 [2021-12-16 00:49:46,152 INFO L226 Difference]: Without dead ends: 3891 [2021-12-16 00:49:46,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:46,158 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1162 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:46,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1423 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:49:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2021-12-16 00:49:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3704. [2021-12-16 00:49:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3094 states have (on average 1.6066580478345185) internal successors, (4971), 3099 states have internal predecessors, (4971), 586 states have call successors, (586), 19 states have call predecessors, (586), 23 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-16 00:49:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 6216 transitions. [2021-12-16 00:49:46,419 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 6216 transitions. Word has length 131 [2021-12-16 00:49:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:46,419 INFO L470 AbstractCegarLoop]: Abstraction has 3704 states and 6216 transitions. [2021-12-16 00:49:46,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 6216 transitions. [2021-12-16 00:49:46,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-16 00:49:46,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:46,434 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:46,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:49:46,434 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2133070594, now seen corresponding path program 1 times [2021-12-16 00:49:46,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:46,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437786136] [2021-12-16 00:49:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:46,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:49:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:49:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:49:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:49:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:49:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:49:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:49:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:49:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:46,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437786136] [2021-12-16 00:49:46,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437786136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:46,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:46,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:46,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237531981] [2021-12-16 00:49:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:46,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:46,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:46,533 INFO L87 Difference]: Start difference. First operand 3704 states and 6216 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:47,903 INFO L93 Difference]: Finished difference Result 8919 states and 15276 transitions. [2021-12-16 00:49:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:47,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-16 00:49:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:47,936 INFO L225 Difference]: With dead ends: 8919 [2021-12-16 00:49:47,937 INFO L226 Difference]: Without dead ends: 6032 [2021-12-16 00:49:47,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:47,949 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1160 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:47,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1444 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2021-12-16 00:49:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 5845. [2021-12-16 00:49:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 4859 states have (on average 1.6005350895245936) internal successors, (7777), 4864 states have internal predecessors, (7777), 962 states have call successors, (962), 19 states have call predecessors, (962), 23 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-16 00:49:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 9818 transitions. [2021-12-16 00:49:48,383 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 9818 transitions. Word has length 132 [2021-12-16 00:49:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:48,383 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 9818 transitions. [2021-12-16 00:49:48,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 9818 transitions. [2021-12-16 00:49:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 00:49:48,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:48,403 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:48,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:49:48,403 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1798701476, now seen corresponding path program 1 times [2021-12-16 00:49:48,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:48,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067936953] [2021-12-16 00:49:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:48,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:49:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:49:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:49:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:49:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:49:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:49:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:49:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:49:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:48,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:48,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067936953] [2021-12-16 00:49:48,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067936953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:48,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:48,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:48,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410018566] [2021-12-16 00:49:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:48,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:48,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:48,505 INFO L87 Difference]: Start difference. First operand 5845 states and 9818 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:49,921 INFO L93 Difference]: Finished difference Result 14536 states and 24889 transitions. [2021-12-16 00:49:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-16 00:49:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:49,967 INFO L225 Difference]: With dead ends: 14536 [2021-12-16 00:49:49,967 INFO L226 Difference]: Without dead ends: 9910 [2021-12-16 00:49:49,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:49,981 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1158 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:49,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1427 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2021-12-16 00:49:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9723. [2021-12-16 00:49:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9723 states, 8131 states have (on average 1.5983273890050425) internal successors, (12996), 8136 states have internal predecessors, (12996), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 23 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-16 00:49:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16327 transitions. [2021-12-16 00:49:50,560 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 16327 transitions. Word has length 133 [2021-12-16 00:49:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:50,560 INFO L470 AbstractCegarLoop]: Abstraction has 9723 states and 16327 transitions. [2021-12-16 00:49:50,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 16327 transitions. [2021-12-16 00:49:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 00:49:50,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:50,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:50,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:49:50,586 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1806206924, now seen corresponding path program 1 times [2021-12-16 00:49:50,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:50,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757901801] [2021-12-16 00:49:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:50,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:49:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:49:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:49:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:49:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:49:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:49:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:49:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:49:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:50,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:50,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757901801] [2021-12-16 00:49:50,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757901801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:50,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:50,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:50,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654927895] [2021-12-16 00:49:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:50,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:50,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:50,677 INFO L87 Difference]: Start difference. First operand 9723 states and 16327 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:52,372 INFO L93 Difference]: Finished difference Result 25245 states and 43170 transitions. [2021-12-16 00:49:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-16 00:49:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:52,437 INFO L225 Difference]: With dead ends: 25245 [2021-12-16 00:49:52,437 INFO L226 Difference]: Without dead ends: 17223 [2021-12-16 00:49:52,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:52,466 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1156 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:52,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1475 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17223 states. [2021-12-16 00:49:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17223 to 17036. [2021-12-16 00:49:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17036 states, 14241 states have (on average 1.5899164384523559) internal successors, (22642), 14246 states have internal predecessors, (22642), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 23 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-16 00:49:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17036 states to 17036 states and 28523 transitions. [2021-12-16 00:49:53,371 INFO L78 Accepts]: Start accepts. Automaton has 17036 states and 28523 transitions. Word has length 134 [2021-12-16 00:49:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:53,372 INFO L470 AbstractCegarLoop]: Abstraction has 17036 states and 28523 transitions. [2021-12-16 00:49:53,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 17036 states and 28523 transitions. [2021-12-16 00:49:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 00:49:53,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:53,414 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:53,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:49:53,414 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -990252573, now seen corresponding path program 1 times [2021-12-16 00:49:53,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637757832] [2021-12-16 00:49:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:53,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:49:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:49:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:49:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:49:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:49:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:49:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:49:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:49:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:53,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:53,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637757832] [2021-12-16 00:49:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637757832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:53,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918763971] [2021-12-16 00:49:53,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:53,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:53,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:53,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:53,529 INFO L87 Difference]: Start difference. First operand 17036 states and 28523 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:49:55,953 INFO L93 Difference]: Finished difference Result 45221 states and 77183 transitions. [2021-12-16 00:49:55,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:49:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-16 00:49:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:49:56,082 INFO L225 Difference]: With dead ends: 45221 [2021-12-16 00:49:56,082 INFO L226 Difference]: Without dead ends: 30563 [2021-12-16 00:49:56,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:49:56,128 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1153 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:49:56,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 1424 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:49:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2021-12-16 00:49:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 30376. [2021-12-16 00:49:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30376 states, 25542 states have (on average 1.5858194346566439) internal successors, (40505), 25547 states have internal predecessors, (40505), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 23 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-16 00:49:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30376 states to 30376 states and 50738 transitions. [2021-12-16 00:49:57,706 INFO L78 Accepts]: Start accepts. Automaton has 30376 states and 50738 transitions. Word has length 135 [2021-12-16 00:49:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:49:57,706 INFO L470 AbstractCegarLoop]: Abstraction has 30376 states and 50738 transitions. [2021-12-16 00:49:57,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:49:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 30376 states and 50738 transitions. [2021-12-16 00:49:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 00:49:57,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:49:57,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:49:57,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:49:57,909 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:49:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:49:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash -420438670, now seen corresponding path program 1 times [2021-12-16 00:49:57,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:49:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64636706] [2021-12-16 00:49:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:49:57,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:49:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:49:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:49:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:49:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:49:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:49:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:49:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:49:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:49:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:49:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:49:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:49:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:49:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:49:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:49:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:49:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:49:58,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:49:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64636706] [2021-12-16 00:49:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64636706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:49:58,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:49:58,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:49:58,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212150487] [2021-12-16 00:49:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:49:58,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:49:58,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:49:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:49:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:49:58,005 INFO L87 Difference]: Start difference. First operand 30376 states and 50738 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:50:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:50:01,336 INFO L93 Difference]: Finished difference Result 82958 states and 140707 transitions. [2021-12-16 00:50:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:50:01,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-16 00:50:01,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:50:01,574 INFO L225 Difference]: With dead ends: 82958 [2021-12-16 00:50:01,574 INFO L226 Difference]: Without dead ends: 55772 [2021-12-16 00:50:01,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:50:01,660 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1151 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:50:01,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 1433 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:50:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55772 states. [2021-12-16 00:50:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55772 to 55585. [2021-12-16 00:50:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55585 states, 47036 states have (on average 1.5804064971511183) internal successors, (74336), 47041 states have internal predecessors, (74336), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 23 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-16 00:50:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55585 states to 55585 states and 92531 transitions. [2021-12-16 00:50:04,680 INFO L78 Accepts]: Start accepts. Automaton has 55585 states and 92531 transitions. Word has length 136 [2021-12-16 00:50:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:50:04,681 INFO L470 AbstractCegarLoop]: Abstraction has 55585 states and 92531 transitions. [2021-12-16 00:50:04,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:50:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 55585 states and 92531 transitions. [2021-12-16 00:50:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 00:50:04,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:50:04,723 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:50:04,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:50:04,723 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:50:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:50:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -472446621, now seen corresponding path program 1 times [2021-12-16 00:50:04,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:50:04,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491484885] [2021-12-16 00:50:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:50:04,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:50:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:50:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:50:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:50:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:50:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:50:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:50:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:50:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:50:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:50:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:50:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:50:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:50:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:50:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:50:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:50:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:50:04,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:50:04,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491484885] [2021-12-16 00:50:04,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491484885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:50:04,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:50:04,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:50:04,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756126171] [2021-12-16 00:50:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:50:04,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:50:04,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:50:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:50:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:50:04,833 INFO L87 Difference]: Start difference. First operand 55585 states and 92531 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:50:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:50:09,443 INFO L93 Difference]: Finished difference Result 104014 states and 176693 transitions. [2021-12-16 00:50:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:50:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-16 00:50:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:50:09,960 INFO L225 Difference]: With dead ends: 104014 [2021-12-16 00:50:09,960 INFO L226 Difference]: Without dead ends: 103846 [2021-12-16 00:50:10,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:50:10,006 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1149 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:50:10,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1430 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:50:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103846 states.