./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product16.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_spec0_product16.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 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:45:09,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:45:09,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:45:09,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:45:09,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:45:09,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:45:09,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:45:09,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:45:09,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:45:09,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:45:09,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:45:09,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:45:09,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:45:09,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:45:09,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:45:09,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:45:09,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:45:09,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:45:09,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:45:09,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:45:09,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:45:09,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:45:09,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:45:09,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:45:09,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:45:09,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:45:09,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:45:09,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:45:09,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:45:09,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:45:09,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:45:09,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:45:09,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:45:09,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:45:09,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:45:09,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:45:09,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:45:09,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:45:09,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:45:09,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:45:09,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:45:09,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:45:09,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:45:09,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:45:09,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:45:09,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:45:09,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:45:09,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:45:09,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:45:09,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:45:09,294 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:45:09,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:45:09,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:45:09,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:45:09,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:45:09,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:45:09,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:45:09,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:45:09,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:45:09,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:45:09,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:45:09,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:45:09,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:45:09,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:45:09,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:45:09,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:45:09,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:45:09,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:45:09,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:45:09,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:45:09,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:45:09,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:45:09,299 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:45:09,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:45:09,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:45:09,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:45:09,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce5fd5bda0c8594f52541a2ff1031f1544bc9165bf7645718c7801e066263fc [2021-12-16 00:45:09,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:45:09,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:45:09,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:45:09,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:45:09,560 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:45:09,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2021-12-16 00:45:09,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b20c6f78/8b71d5c88ee045d3aa0927f641906692/FLAG956839b81 [2021-12-16 00:45:10,155 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:45:10,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product16.cil.c [2021-12-16 00:45:10,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b20c6f78/8b71d5c88ee045d3aa0927f641906692/FLAG956839b81 [2021-12-16 00:45:10,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b20c6f78/8b71d5c88ee045d3aa0927f641906692 [2021-12-16 00:45:10,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:45:10,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:45:10,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:45:10,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:45:10,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:45:10,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:45:10" (1/1) ... [2021-12-16 00:45:10,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7e9db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:10, skipping insertion in model container [2021-12-16 00:45:10,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:45:10" (1/1) ... [2021-12-16 00:45:10,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:45:10,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:45:10,936 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_spec0_product16.cil.c[7449,7462] [2021-12-16 00:45:11,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:45:11,184 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:45:11,213 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_spec0_product16.cil.c[7449,7462] [2021-12-16 00:45:11,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:45:11,281 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:45:11,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11 WrapperNode [2021-12-16 00:45:11,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:45:11,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:45:11,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:45:11,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:45:11,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,362 INFO L137 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 971 [2021-12-16 00:45:11,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:45:11,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:45:11,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:45:11,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:45:11,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:45:11,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:45:11,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:45:11,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:45:11,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (1/1) ... [2021-12-16 00:45:11,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:45:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:11,460 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 00:45:11,480 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 00:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-16 00:45:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-16 00:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-16 00:45:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-16 00:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:45:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:45:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:45:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:45:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-16 00:45:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-16 00:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:45:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-16 00:45:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-16 00:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:45:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:45:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:45:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:45:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:45:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:45:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:45:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:45:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:45:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-16 00:45:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-16 00:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:45:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:45:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:45:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:45:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:45:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:45:11,702 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:45:11,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:45:12,296 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:45:12,305 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:45:12,305 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:45:12,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:45:12 BoogieIcfgContainer [2021-12-16 00:45:12,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:45:12,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:45:12,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:45:12,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:45:12,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:45:10" (1/3) ... [2021-12-16 00:45:12,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e611733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:45:12, skipping insertion in model container [2021-12-16 00:45:12,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:11" (2/3) ... [2021-12-16 00:45:12,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e611733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:45:12, skipping insertion in model container [2021-12-16 00:45:12,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:45:12" (3/3) ... [2021-12-16 00:45:12,313 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2021-12-16 00:45:12,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:45:12,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:45:12,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:45:12,359 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 00:45:12,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:45:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-16 00:45:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 00:45:12,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:12,394 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:12,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash -702970754, now seen corresponding path program 1 times [2021-12-16 00:45:12,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:12,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922779052] [2021-12-16 00:45:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:12,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:45:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:45:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:45:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:45:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:45:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:45:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:45:12,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922779052] [2021-12-16 00:45:12,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922779052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:12,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832865977] [2021-12-16 00:45:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:12,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:12,850 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 00:45:12,858 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 00:45:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:45:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:13,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:13,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832865977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:13,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:13,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:45:13,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446979655] [2021-12-16 00:45:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:13,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:45:13,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:45:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:13,506 INFO L87 Difference]: Start difference. First operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 00:45:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:13,550 INFO L93 Difference]: Finished difference Result 444 states and 654 transitions. [2021-12-16 00:45:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:45:13,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 115 [2021-12-16 00:45:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:13,564 INFO L225 Difference]: With dead ends: 444 [2021-12-16 00:45:13,564 INFO L226 Difference]: Without dead ends: 292 [2021-12-16 00:45:13,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 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 00:45:13,571 INFO L933 BasicCegarLoop]: 446 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, 446 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 00:45:13,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-16 00:45:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-12-16 00:45:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 229 states have (on average 1.5240174672489082) internal successors, (349), 232 states have internal predecessors, (349), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 00:45:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 438 transitions. [2021-12-16 00:45:13,648 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 438 transitions. Word has length 115 [2021-12-16 00:45:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:13,649 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 438 transitions. [2021-12-16 00:45:13,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 00:45:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 438 transitions. [2021-12-16 00:45:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 00:45:13,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:13,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:13,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 00:45:13,867 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 00:45:13,868 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -703418094, now seen corresponding path program 1 times [2021-12-16 00:45:13,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:13,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254478433] [2021-12-16 00:45:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:13,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:45:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:45:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:45:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:45:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:45:14,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254478433] [2021-12-16 00:45:14,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254478433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567990830] [2021-12-16 00:45:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:14,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:14,058 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 00:45:14,059 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 00:45:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:45:14,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:14,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567990830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:14,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:45:14,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109937111] [2021-12-16 00:45:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:45:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:45:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:14,521 INFO L87 Difference]: Start difference. First operand 292 states and 438 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 00:45:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:14,579 INFO L93 Difference]: Finished difference Result 434 states and 635 transitions. [2021-12-16 00:45:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:45:14,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 116 [2021-12-16 00:45:14,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:14,589 INFO L225 Difference]: With dead ends: 434 [2021-12-16 00:45:14,589 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 00:45:14,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 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 00:45:14,595 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 1 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 870 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 00:45:14,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 870 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 00:45:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-12-16 00:45:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 231 states have (on average 1.5194805194805194) internal successors, (351), 234 states have internal predecessors, (351), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 00:45:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 440 transitions. [2021-12-16 00:45:14,615 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 440 transitions. Word has length 116 [2021-12-16 00:45:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:14,616 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 440 transitions. [2021-12-16 00:45:14,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 00:45:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 440 transitions. [2021-12-16 00:45:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 00:45:14,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:14,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:14,654 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 00:45:14,843 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 00:45:14,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash 571691387, now seen corresponding path program 1 times [2021-12-16 00:45:14,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:14,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882058314] [2021-12-16 00:45:14,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:14,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 00:45:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:45:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:45:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:45:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:45:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:15,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882058314] [2021-12-16 00:45:15,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882058314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248243368] [2021-12-16 00:45:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:15,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:15,058 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 00:45:15,059 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 00:45:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:45:15,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:15,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:15,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248243368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:15,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:15,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:45:15,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665977998] [2021-12-16 00:45:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:15,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:45:15,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:45:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:15,532 INFO L87 Difference]: Start difference. First operand 294 states and 440 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 00:45:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:15,556 INFO L93 Difference]: Finished difference Result 618 states and 939 transitions. [2021-12-16 00:45:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:45:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 122 [2021-12-16 00:45:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:15,559 INFO L225 Difference]: With dead ends: 618 [2021-12-16 00:45:15,560 INFO L226 Difference]: Without dead ends: 351 [2021-12-16 00:45:15,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 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 00:45:15,562 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 107 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 854 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 00:45:15,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 854 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-16 00:45:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2021-12-16 00:45:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 269 states have (on average 1.5353159851301115) internal successors, (413), 272 states have internal predecessors, (413), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-16 00:45:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 524 transitions. [2021-12-16 00:45:15,596 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 524 transitions. Word has length 122 [2021-12-16 00:45:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:15,598 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 524 transitions. [2021-12-16 00:45:15,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 00:45:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 524 transitions. [2021-12-16 00:45:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 00:45:15,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:15,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:15,622 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 00:45:15,807 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 00:45:15,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 761677637, now seen corresponding path program 1 times [2021-12-16 00:45:15,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:15,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506784230] [2021-12-16 00:45:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:15,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 00:45:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:45:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:45:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:45:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:45:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:45:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:45:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:15,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:15,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506784230] [2021-12-16 00:45:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506784230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841123829] [2021-12-16 00:45:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:15,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:15,962 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 00:45:15,968 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 00:45:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:45:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:45:16,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:16,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841123829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:16,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:16,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:45:16,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582962470] [2021-12-16 00:45:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:16,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:45:16,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:45:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:16,431 INFO L87 Difference]: Start difference. First operand 343 states and 524 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:16,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:16,491 INFO L93 Difference]: Finished difference Result 677 states and 1038 transitions. [2021-12-16 00:45:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:45:16,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-12-16 00:45:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:16,495 INFO L225 Difference]: With dead ends: 677 [2021-12-16 00:45:16,495 INFO L226 Difference]: Without dead ends: 345 [2021-12-16 00:45:16,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 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 00:45:16,497 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 125 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1572 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 00:45:16,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1572 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-16 00:45:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-12-16 00:45:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 270 states have (on average 1.5333333333333334) internal successors, (414), 274 states have internal predecessors, (414), 56 states have call successors, (56), 17 states have call predecessors, (56), 18 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2021-12-16 00:45:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 527 transitions. [2021-12-16 00:45:16,514 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 527 transitions. Word has length 123 [2021-12-16 00:45:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:16,515 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 527 transitions. [2021-12-16 00:45:16,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 527 transitions. [2021-12-16 00:45:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 00:45:16,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:16,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:16,545 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 00:45:16,737 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 00:45:16,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:16,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1150133454, now seen corresponding path program 1 times [2021-12-16 00:45:16,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:16,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095526060] [2021-12-16 00:45:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:16,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:45:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:45:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 00:45:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:45:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:45:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:45:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:45:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:45:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:45:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:16,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:16,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095526060] [2021-12-16 00:45:16,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095526060] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:16,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202369868] [2021-12-16 00:45:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:16,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:16,920 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 00:45:16,948 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 00:45:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:45:17,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:45:17,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:17,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202369868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:17,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:17,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:45:17,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976265595] [2021-12-16 00:45:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:17,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:45:17,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:45:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:45:17,346 INFO L87 Difference]: Start difference. First operand 345 states and 527 transitions. Second operand has 5 states, 5 states have (on average 16.4) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:17,408 INFO L93 Difference]: Finished difference Result 679 states and 1043 transitions. [2021-12-16 00:45:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:45:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-12-16 00:45:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:17,411 INFO L225 Difference]: With dead ends: 679 [2021-12-16 00:45:17,411 INFO L226 Difference]: Without dead ends: 347 [2021-12-16 00:45:17,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 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 00:45:17,413 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 124 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1561 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 00:45:17,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1561 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-16 00:45:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-16 00:45:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 271 states have (on average 1.5313653136531364) internal successors, (415), 276 states have internal predecessors, (415), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-16 00:45:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 533 transitions. [2021-12-16 00:45:17,429 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 533 transitions. Word has length 124 [2021-12-16 00:45:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:17,430 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 533 transitions. [2021-12-16 00:45:17,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 533 transitions. [2021-12-16 00:45:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 00:45:17,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:17,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:17,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 00:45:17,650 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 00:45:17,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1920927241, now seen corresponding path program 1 times [2021-12-16 00:45:17,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:17,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437924037] [2021-12-16 00:45:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:17,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:45:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:45:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:45:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:45:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:45:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:45:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:45:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:45:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:17,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:17,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437924037] [2021-12-16 00:45:17,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437924037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:17,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:17,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:45:17,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553588018] [2021-12-16 00:45:17,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:17,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:45:17,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:45:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:17,770 INFO L87 Difference]: Start difference. First operand 347 states and 533 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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 00:45:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:19,187 INFO L93 Difference]: Finished difference Result 818 states and 1253 transitions. [2021-12-16 00:45:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:45:19,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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 125 [2021-12-16 00:45:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:19,192 INFO L225 Difference]: With dead ends: 818 [2021-12-16 00:45:19,192 INFO L226 Difference]: Without dead ends: 494 [2021-12-16 00:45:19,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:45:19,194 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1071 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:19,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 1509 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:45:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-12-16 00:45:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 347. [2021-12-16 00:45:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 271 states have (on average 1.5313653136531364) internal successors, (415), 276 states have internal predecessors, (415), 56 states have call successors, (56), 17 states have call predecessors, (56), 19 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2021-12-16 00:45:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 532 transitions. [2021-12-16 00:45:19,225 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 532 transitions. Word has length 125 [2021-12-16 00:45:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:19,227 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 532 transitions. [2021-12-16 00:45:19,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 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 00:45:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 532 transitions. [2021-12-16 00:45:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-16 00:45:19,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:19,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:19,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:45:19,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1875232994, now seen corresponding path program 2 times [2021-12-16 00:45:19,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:19,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117980983] [2021-12-16 00:45:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:19,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:45:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:45:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:45:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:45:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:45:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:45:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:45:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:19,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:19,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117980983] [2021-12-16 00:45:19,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117980983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:19,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:19,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:45:19,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64510764] [2021-12-16 00:45:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:19,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:45:19,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:45:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:19,345 INFO L87 Difference]: Start difference. First operand 347 states and 532 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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 00:45:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:20,662 INFO L93 Difference]: Finished difference Result 820 states and 1256 transitions. [2021-12-16 00:45:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:45:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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 126 [2021-12-16 00:45:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:20,666 INFO L225 Difference]: With dead ends: 820 [2021-12-16 00:45:20,666 INFO L226 Difference]: Without dead ends: 496 [2021-12-16 00:45:20,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:45:20,668 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 1130 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:20,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 1503 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:45:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-12-16 00:45:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 349. [2021-12-16 00:45:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 272 states have (on average 1.5294117647058822) internal successors, (416), 278 states have internal predecessors, (416), 56 states have call successors, (56), 17 states have call predecessors, (56), 20 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2021-12-16 00:45:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 535 transitions. [2021-12-16 00:45:20,720 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 535 transitions. Word has length 126 [2021-12-16 00:45:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:20,721 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 535 transitions. [2021-12-16 00:45:20,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 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 00:45:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 535 transitions. [2021-12-16 00:45:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-16 00:45:20,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:20,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:20,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:45:20,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199076, now seen corresponding path program 1 times [2021-12-16 00:45:20,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107528274] [2021-12-16 00:45:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:20,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:45:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:45:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:45:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:45:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:45:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:45:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:20,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107528274] [2021-12-16 00:45:20,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107528274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:20,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:20,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:45:20,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649938426] [2021-12-16 00:45:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:20,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:45:20,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:45:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:20,888 INFO L87 Difference]: Start difference. First operand 349 states and 535 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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 00:45:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:22,824 INFO L93 Difference]: Finished difference Result 818 states and 1251 transitions. [2021-12-16 00:45:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:45:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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 127 [2021-12-16 00:45:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:22,827 INFO L225 Difference]: With dead ends: 818 [2021-12-16 00:45:22,827 INFO L226 Difference]: Without dead ends: 496 [2021-12-16 00:45:22,829 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 00:45:22,829 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 1142 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:22,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 1986 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 00:45:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-12-16 00:45:22,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 349. [2021-12-16 00:45:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 272 states have (on average 1.5294117647058822) internal successors, (416), 278 states have internal predecessors, (416), 56 states have call successors, (56), 17 states have call predecessors, (56), 20 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-16 00:45:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 534 transitions. [2021-12-16 00:45:22,850 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 534 transitions. Word has length 127 [2021-12-16 00:45:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:22,850 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 534 transitions. [2021-12-16 00:45:22,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 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 00:45:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 534 transitions. [2021-12-16 00:45:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 00:45:22,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:22,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:22,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:45:22,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 768592743, now seen corresponding path program 2 times [2021-12-16 00:45:22,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:22,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534380398] [2021-12-16 00:45:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:22,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:45:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:45:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:45:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:45:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:45:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:45:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:22,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534380398] [2021-12-16 00:45:22,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534380398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:22,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:22,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:45:22,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45458571] [2021-12-16 00:45:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:22,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:45:22,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:45:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:22,991 INFO L87 Difference]: Start difference. First operand 349 states and 534 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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 00:45:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:24,822 INFO L93 Difference]: Finished difference Result 820 states and 1257 transitions. [2021-12-16 00:45:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:45:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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 128 [2021-12-16 00:45:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:24,826 INFO L225 Difference]: With dead ends: 820 [2021-12-16 00:45:24,826 INFO L226 Difference]: Without dead ends: 498 [2021-12-16 00:45:24,827 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 00:45:24,828 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1202 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:24,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 1953 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 00:45:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-12-16 00:45:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 351. [2021-12-16 00:45:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 273 states have (on average 1.5274725274725274) internal successors, (417), 280 states have internal predecessors, (417), 56 states have call successors, (56), 17 states have call predecessors, (56), 21 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2021-12-16 00:45:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 540 transitions. [2021-12-16 00:45:24,850 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 540 transitions. Word has length 128 [2021-12-16 00:45:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:24,851 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 540 transitions. [2021-12-16 00:45:24,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 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 00:45:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 540 transitions. [2021-12-16 00:45:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-16 00:45:24,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:24,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:24,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:45:24,854 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:24,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1519679615, now seen corresponding path program 1 times [2021-12-16 00:45:24,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:24,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282869375] [2021-12-16 00:45:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:24,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:45:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:45:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:45:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:45:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:45:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:45:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:24,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282869375] [2021-12-16 00:45:24,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282869375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:24,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030859499] [2021-12-16 00:45:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:24,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:24,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:24,977 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 00:45:24,978 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 00:45:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:45:25,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:25,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:45:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:25,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030859499] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:45:25,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:45:25,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-16 00:45:25,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256493672] [2021-12-16 00:45:25,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:45:25,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 00:45:25,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 00:45:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:45:25,671 INFO L87 Difference]: Start difference. First operand 351 states and 540 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-16 00:45:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:27,314 INFO L93 Difference]: Finished difference Result 989 states and 1585 transitions. [2021-12-16 00:45:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 00:45:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 129 [2021-12-16 00:45:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:27,319 INFO L225 Difference]: With dead ends: 989 [2021-12-16 00:45:27,319 INFO L226 Difference]: Without dead ends: 850 [2021-12-16 00:45:27,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:45:27,321 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1314 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:27,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1359 Valid, 2221 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 00:45:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-12-16 00:45:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 679. [2021-12-16 00:45:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 537 states have (on average 1.5921787709497206) internal successors, (855), 544 states have internal predecessors, (855), 120 states have call successors, (120), 17 states have call predecessors, (120), 21 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2021-12-16 00:45:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1116 transitions. [2021-12-16 00:45:27,358 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1116 transitions. Word has length 129 [2021-12-16 00:45:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:27,358 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 1116 transitions. [2021-12-16 00:45:27,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-16 00:45:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1116 transitions. [2021-12-16 00:45:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 00:45:27,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:27,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:27,384 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 00:45:27,575 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 00:45:27,575 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash -805071874, now seen corresponding path program 1 times [2021-12-16 00:45:27,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:27,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528763750] [2021-12-16 00:45:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:27,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:45:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:45:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:45:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:45:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:45:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:27,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:27,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528763750] [2021-12-16 00:45:27,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528763750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:27,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:27,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:27,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723366791] [2021-12-16 00:45:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:27,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:27,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:27,684 INFO L87 Difference]: Start difference. First operand 679 states and 1116 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 00:45:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:28,663 INFO L93 Difference]: Finished difference Result 1770 states and 2956 transitions. [2021-12-16 00:45:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:28,664 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 135 [2021-12-16 00:45:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:28,670 INFO L225 Difference]: With dead ends: 1770 [2021-12-16 00:45:28,670 INFO L226 Difference]: Without dead ends: 1159 [2021-12-16 00:45:28,673 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 00:45:28,673 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1065 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:28,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 1294 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-12-16 00:45:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1004. [2021-12-16 00:45:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 798 states have (on average 1.6040100250626566) internal successors, (1280), 805 states have internal predecessors, (1280), 184 states have call successors, (184), 17 states have call predecessors, (184), 21 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2021-12-16 00:45:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1679 transitions. [2021-12-16 00:45:28,727 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1679 transitions. Word has length 135 [2021-12-16 00:45:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:28,727 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1679 transitions. [2021-12-16 00:45:28,727 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 00:45:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1679 transitions. [2021-12-16 00:45:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 00:45:28,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:28,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:28,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:45:28,734 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1467472897, now seen corresponding path program 1 times [2021-12-16 00:45:28,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:28,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339162916] [2021-12-16 00:45:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:28,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:45:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:45:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:45:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:45:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:45:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:45:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:28,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:28,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339162916] [2021-12-16 00:45:28,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339162916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:28,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:28,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:28,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176624141] [2021-12-16 00:45:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:28,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:28,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:28,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:28,836 INFO L87 Difference]: Start difference. First operand 1004 states and 1679 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 00:45:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:29,912 INFO L93 Difference]: Finished difference Result 2550 states and 4305 transitions. [2021-12-16 00:45:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:29,913 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 136 [2021-12-16 00:45:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:29,921 INFO L225 Difference]: With dead ends: 2550 [2021-12-16 00:45:29,921 INFO L226 Difference]: Without dead ends: 1667 [2021-12-16 00:45:29,925 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 00:45:29,925 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1026 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:29,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1297 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-12-16 00:45:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1512. [2021-12-16 00:45:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1211 states have (on average 1.611065235342692) internal successors, (1951), 1218 states have internal predecessors, (1951), 279 states have call successors, (279), 17 states have call predecessors, (279), 21 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2021-12-16 00:45:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2540 transitions. [2021-12-16 00:45:29,998 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2540 transitions. Word has length 136 [2021-12-16 00:45:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:29,998 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2540 transitions. [2021-12-16 00:45:29,999 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 00:45:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2540 transitions. [2021-12-16 00:45:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 00:45:30,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:30,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:45:30,017 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -543683200, now seen corresponding path program 1 times [2021-12-16 00:45:30,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:30,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923003993] [2021-12-16 00:45:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:30,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:45:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:45:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:45:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:45:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:45:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:30,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:30,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923003993] [2021-12-16 00:45:30,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923003993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:30,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:30,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325654649] [2021-12-16 00:45:30,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:30,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:30,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:30,125 INFO L87 Difference]: Start difference. First operand 1512 states and 2540 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 00:45:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:31,070 INFO L93 Difference]: Finished difference Result 3702 states and 6314 transitions. [2021-12-16 00:45:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:31,071 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 137 [2021-12-16 00:45:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:31,084 INFO L225 Difference]: With dead ends: 3702 [2021-12-16 00:45:31,084 INFO L226 Difference]: Without dead ends: 2436 [2021-12-16 00:45:31,089 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 00:45:31,090 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1075 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:31,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1255 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-12-16 00:45:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2281. [2021-12-16 00:45:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1857 states have (on average 1.6165858912224018) internal successors, (3002), 1864 states have internal predecessors, (3002), 402 states have call successors, (402), 17 states have call predecessors, (402), 21 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2021-12-16 00:45:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3853 transitions. [2021-12-16 00:45:31,209 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3853 transitions. Word has length 137 [2021-12-16 00:45:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:31,209 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 3853 transitions. [2021-12-16 00:45:31,209 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 00:45:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3853 transitions. [2021-12-16 00:45:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-16 00:45:31,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:31,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:31,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:45:31,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash 736700544, now seen corresponding path program 1 times [2021-12-16 00:45:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768424981] [2021-12-16 00:45:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:31,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:45:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:45:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:45:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:45:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:45:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:45:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:31,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768424981] [2021-12-16 00:45:31,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768424981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:31,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:31,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:31,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187220844] [2021-12-16 00:45:31,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:31,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:31,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:31,318 INFO L87 Difference]: Start difference. First operand 2281 states and 3853 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 00:45:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:32,328 INFO L93 Difference]: Finished difference Result 5496 states and 9448 transitions. [2021-12-16 00:45:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:32,328 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 138 [2021-12-16 00:45:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:32,345 INFO L225 Difference]: With dead ends: 5496 [2021-12-16 00:45:32,345 INFO L226 Difference]: Without dead ends: 3665 [2021-12-16 00:45:32,351 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 00:45:32,352 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 1090 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:32,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1228 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2021-12-16 00:45:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3510. [2021-12-16 00:45:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2907 states have (on average 1.6198830409356726) internal successors, (4709), 2914 states have internal predecessors, (4709), 581 states have call successors, (581), 17 states have call predecessors, (581), 21 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2021-12-16 00:45:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5944 transitions. [2021-12-16 00:45:32,549 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5944 transitions. Word has length 138 [2021-12-16 00:45:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 5944 transitions. [2021-12-16 00:45:32,550 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 00:45:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5944 transitions. [2021-12-16 00:45:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 00:45:32,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:32,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:32,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:45:32,564 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1948596892, now seen corresponding path program 1 times [2021-12-16 00:45:32,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:32,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213776468] [2021-12-16 00:45:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:32,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:45:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:45:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:45:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:45:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:45:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:45:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:45:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:32,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213776468] [2021-12-16 00:45:32,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213776468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:32,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:32,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:32,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187256941] [2021-12-16 00:45:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:32,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:32,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:32,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:32,651 INFO L87 Difference]: Start difference. First operand 3510 states and 5944 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 00:45:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:33,765 INFO L93 Difference]: Finished difference Result 8444 states and 14595 transitions. [2021-12-16 00:45:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:33,765 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 139 [2021-12-16 00:45:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:33,794 INFO L225 Difference]: With dead ends: 8444 [2021-12-16 00:45:33,794 INFO L226 Difference]: Without dead ends: 5696 [2021-12-16 00:45:33,805 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 00:45:33,806 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1049 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:33,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 1298 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2021-12-16 00:45:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5541. [2021-12-16 00:45:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4562 states have (on average 1.6135466900482245) internal successors, (7361), 4569 states have internal predecessors, (7361), 957 states have call successors, (957), 17 states have call predecessors, (957), 21 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2021-12-16 00:45:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9392 transitions. [2021-12-16 00:45:34,110 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9392 transitions. Word has length 139 [2021-12-16 00:45:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:34,110 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 9392 transitions. [2021-12-16 00:45:34,110 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 00:45:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9392 transitions. [2021-12-16 00:45:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 00:45:34,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:34,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:34,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:45:34,160 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1145408356, now seen corresponding path program 1 times [2021-12-16 00:45:34,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:34,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991353866] [2021-12-16 00:45:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:34,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:45:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:45:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:45:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:45:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:45:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:45:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:34,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991353866] [2021-12-16 00:45:34,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991353866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:34,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:34,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:34,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908621223] [2021-12-16 00:45:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:34,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:34,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:34,257 INFO L87 Difference]: Start difference. First operand 5541 states and 9392 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 00:45:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:35,475 INFO L93 Difference]: Finished difference Result 13781 states and 23816 transitions. [2021-12-16 00:45:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:35,476 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 140 [2021-12-16 00:45:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:35,518 INFO L225 Difference]: With dead ends: 13781 [2021-12-16 00:45:35,518 INFO L226 Difference]: Without dead ends: 9379 [2021-12-16 00:45:35,535 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 00:45:35,536 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 1067 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:35,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1252 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2021-12-16 00:45:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9224. [2021-12-16 00:45:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7639 states have (on average 1.6110747480036653) internal successors, (12307), 7646 states have internal predecessors, (12307), 1563 states have call successors, (1563), 17 states have call predecessors, (1563), 21 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2021-12-16 00:45:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15628 transitions. [2021-12-16 00:45:36,081 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15628 transitions. Word has length 140 [2021-12-16 00:45:36,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:36,082 INFO L470 AbstractCegarLoop]: Abstraction has 9224 states and 15628 transitions. [2021-12-16 00:45:36,083 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 00:45:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15628 transitions. [2021-12-16 00:45:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 00:45:36,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:36,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:45:36,112 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1941188202, now seen corresponding path program 1 times [2021-12-16 00:45:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320501622] [2021-12-16 00:45:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:36,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:45:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:45:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:45:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:45:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:45:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:45:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:36,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320501622] [2021-12-16 00:45:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320501622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:36,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:36,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:36,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049400880] [2021-12-16 00:45:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:36,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:36,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:36,212 INFO L87 Difference]: Start difference. First operand 9224 states and 15628 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 00:45:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:37,654 INFO L93 Difference]: Finished difference Result 23965 states and 41362 transitions. [2021-12-16 00:45:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:37,655 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 141 [2021-12-16 00:45:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:37,722 INFO L225 Difference]: With dead ends: 23965 [2021-12-16 00:45:37,723 INFO L226 Difference]: Without dead ends: 16332 [2021-12-16 00:45:37,759 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 00:45:37,760 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1059 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:37,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 1337 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16332 states. [2021-12-16 00:45:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16332 to 16177. [2021-12-16 00:45:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13389 states have (on average 1.6019867055045187) internal successors, (21449), 13396 states have internal predecessors, (21449), 2766 states have call successors, (2766), 17 states have call predecessors, (2766), 21 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2021-12-16 00:45:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27320 transitions. [2021-12-16 00:45:38,631 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27320 transitions. Word has length 141 [2021-12-16 00:45:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:38,632 INFO L470 AbstractCegarLoop]: Abstraction has 16177 states and 27320 transitions. [2021-12-16 00:45:38,632 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 00:45:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27320 transitions. [2021-12-16 00:45:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-16 00:45:38,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:38,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:38,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:45:38,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1855002885, now seen corresponding path program 1 times [2021-12-16 00:45:38,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:38,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613940765] [2021-12-16 00:45:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:38,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:45:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:45:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:45:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:45:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:45:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:45:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:38,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:38,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613940765] [2021-12-16 00:45:38,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613940765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:38,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:38,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:38,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019668799] [2021-12-16 00:45:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:38,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:38,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:38,758 INFO L87 Difference]: Start difference. First operand 16177 states and 27320 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 00:45:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:40,465 INFO L93 Difference]: Finished difference Result 42931 states and 73961 transitions. [2021-12-16 00:45:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:40,465 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 142 [2021-12-16 00:45:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:40,584 INFO L225 Difference]: With dead ends: 42931 [2021-12-16 00:45:40,584 INFO L226 Difference]: Without dead ends: 28987 [2021-12-16 00:45:40,644 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 00:45:40,644 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 1139 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:40,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 1244 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28987 states. [2021-12-16 00:45:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28987 to 28832. [2021-12-16 00:45:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24005 states have (on average 1.5977088106644448) internal successors, (38353), 24012 states have internal predecessors, (38353), 4805 states have call successors, (4805), 17 states have call predecessors, (4805), 21 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2021-12-16 00:45:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48576 transitions. [2021-12-16 00:45:42,189 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48576 transitions. Word has length 142 [2021-12-16 00:45:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 28832 states and 48576 transitions. [2021-12-16 00:45:42,190 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 00:45:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48576 transitions. [2021-12-16 00:45:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 00:45:42,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:42,231 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:42,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:45:42,231 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -92590932, now seen corresponding path program 1 times [2021-12-16 00:45:42,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:42,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091817494] [2021-12-16 00:45:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:42,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:45:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:45:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:45:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:45:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:45:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:42,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:42,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091817494] [2021-12-16 00:45:42,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091817494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:42,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676206985] [2021-12-16 00:45:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:42,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:42,313 INFO L87 Difference]: Start difference. First operand 28832 states and 48576 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 00:45:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:44,933 INFO L93 Difference]: Finished difference Result 78693 states and 134720 transitions. [2021-12-16 00:45:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:44,933 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 143 [2021-12-16 00:45:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:45,160 INFO L225 Difference]: With dead ends: 78693 [2021-12-16 00:45:45,161 INFO L226 Difference]: Without dead ends: 52866 [2021-12-16 00:45:45,246 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 00:45:45,247 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1055 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:45,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 1275 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52866 states. [2021-12-16 00:45:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52866 to 52711. [2021-12-16 00:45:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44169 states have (on average 1.5921121148316693) internal successors, (70322), 44176 states have internal predecessors, (70322), 8520 states have call successors, (8520), 17 states have call predecessors, (8520), 21 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2021-12-16 00:45:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88507 transitions. [2021-12-16 00:45:47,641 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88507 transitions. Word has length 143 [2021-12-16 00:45:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:47,642 INFO L470 AbstractCegarLoop]: Abstraction has 52711 states and 88507 transitions. [2021-12-16 00:45:47,642 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-16 00:45:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88507 transitions. [2021-12-16 00:45:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 00:45:47,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:47,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:47,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:45:47,695 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1419007045, now seen corresponding path program 1 times [2021-12-16 00:45:47,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:47,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329602821] [2021-12-16 00:45:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:47,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:45:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:45:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:45:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:45:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:45:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:45:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:47,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329602821] [2021-12-16 00:45:47,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329602821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:47,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:47,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:47,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196070631] [2021-12-16 00:45:47,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:47,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:47,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:47,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:47,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:47,795 INFO L87 Difference]: Start difference. First operand 52711 states and 88507 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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 00:45:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:51,377 INFO L93 Difference]: Finished difference Result 98464 states and 168907 transitions. [2021-12-16 00:45:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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 144 [2021-12-16 00:45:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:51,778 INFO L225 Difference]: With dead ends: 98464 [2021-12-16 00:45:51,778 INFO L226 Difference]: Without dead ends: 98325 [2021-12-16 00:45:51,839 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 00:45:51,840 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1006 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:51,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1294 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98325 states. [2021-12-16 00:45:55,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98325 to 98170. [2021-12-16 00:45:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82829 states have (on average 1.58509700708689) internal successors, (131292), 82836 states have internal predecessors, (131292), 15319 states have call successors, (15319), 17 states have call predecessors, (15319), 21 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2021-12-16 00:45:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164121 transitions. [2021-12-16 00:45:56,021 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164121 transitions. Word has length 144 [2021-12-16 00:45:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:56,021 INFO L470 AbstractCegarLoop]: Abstraction has 98170 states and 164121 transitions. [2021-12-16 00:45:56,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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 00:45:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164121 transitions. [2021-12-16 00:45:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 00:45:56,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:56,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:56,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 00:45:56,088 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1257113227, now seen corresponding path program 1 times [2021-12-16 00:45:56,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:56,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627412182] [2021-12-16 00:45:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:56,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:45:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:45:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:45:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:45:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:45:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:45:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:45:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 00:45:56,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:56,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627412182] [2021-12-16 00:45:56,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627412182] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:56,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010837950] [2021-12-16 00:45:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:56,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:56,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:45:56,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 00:45:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:56,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 00:45:56,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 00:45:57,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010837950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:57,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-16 00:45:57,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889889031] [2021-12-16 00:45:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:57,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:45:57,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:45:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-16 00:45:57,454 INFO L87 Difference]: Start difference. First operand 98170 states and 164121 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14)